International Trucks Diagnostics Trouble Codes (DTCs)

See also:International Trucks Service Repair Manuals PDF

International 8600

Fault codes in PDF

International 3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600 fault code list (PDF) – download

DISPLAYING DIAGNOSTIC TROUBLE CODES

The ability to display diagnostic trouble codes (DTC) is an optional feature. Codes may be displayed on either the gauge cluster or an optional vehicle information display (VID). The vehicle must be equipped with the option to display codes in both cases. Codes will not be displayed on the gauge cluster if the vehicle is equipped with the VID.

VEHICLES EQUIPPED WITH OPTION TO DISPLAY CODES

Displaying Codes on the Gauge Cluster (Non-VID equipped vehicles)

To display codes on vehicles not equipped with a VID:

Displaying Codes on the VID (if equipped)

The VID can be used to display all diagnostic trouble codes (DTC) on the vehicle. Suspect parameter number (SPN), failure mode indicator (FMI) and occurrence count numbers are listed. Source addresses and DTC descriptions are presented in plain text.

NOTE – The VID will display “Not Available” if a DTC description is not available for a particular fault.

Displaying codes will only be allowed if all of the following conditions are true:

• The key switch is in the IGNITION position.
• AND displaying codes is allowed due to vehicle orderable options
• AND the programmable parameter “Diagnostics” is enabled using Diamond Logic® Builder (DLB).
• The vehicle is not moving (the Vehicle Speed is equal to zero).
• The feature is not password protected to prevent unauthorized access. Refer to the Vehicle Information Display Owner’s Manual for more information.

Perform the following steps if all of the above conditions are met:

1. Go to the main menu screen

NOTE – The following selections will not be available if the vehicle is not equipped with the option to display codes.

2. Select “DIAGNOSTIC CODES”

3. Select “ACTIVE” or “INACTIVE”. The VID may initiate a password prompt if the VID has been password protected. Refer to the Vehicle Information Display Owner’s Manual for more information.

The VID will indicate “NO FAULT DETECTED” if faults are not found. Scroll through the list of faults if faults are present.
The following information will be displayed for each fault: SPN : FMI OC
SA
DTC Description

CLEARING DIAGNOSTIC TROUBLE CODES

Previously active diagnostic trouble codes can only be cleared by a service tool, such as Diamond Logic® Builder (DLB). Some previously active codes may not be cleared by this method.

DEFINITIONS

“SPN” represents the Suspect Parameter Number. This number identif es the item for which diagnostics are being reported.
FMI” is the Failure Mode Indicator. This number represents the type of failure detected. Refer to Failure Mode Indicators (FMI) below for more information.
Active” or “Previously Active” will be displayed to identify whether a fault is currently active or if the fault was previously active.
OC” is the Occurrence Count. This number represents the number of times a fault has gone from previously active to active.
“SA” is the Source Address. This number identif es the module reporting the fault. Refer to Source Addresses (SA) for more information.

FAILURE MODE INDICATORS (FMI)

FMI=0 – Data Valid But Above Normal Operational Range – Most Severe Level
FMI=1 – Data Valid But Below Normal Operational Range – Most Severe Level
FMI=2 – Data Erratic, Intermittent Or Incorrect
FMI=3 – Voltage Above Normal, Or Shorted To High Source
FMI=4 – Voltage Below Normal, Or Shorted To Low Source
FMI=5 – Current Below Normal Or Open Circuit
FMI=6 – Current Above Normal Or Grounded Circuit
FMI=7 – Mechanical System Not Responding Or Out Of Adjustment
FMI=8 – Abnormal Frequency Or Pulse Width Or Period
FMI=9 – Abnormal Update Rate
FMI=10 – Abnormal Rate Of Change
FMI=11 – Root Cause Not Known
FMI=12 – Bad Intelligent Device Or Component
FMI=13 – Out Of Calibration
FMI=14 – Special Instructions
FMI=15 – Data Valid But Above Normal Operating Range – Least Severe Level
FMI=16 – Data Valid But Above Normal Operating Range – Moderately Severe Level
FMI=17 – Data Valid But Below Normal Operating Range – Least Severe Level
FMI=18 – Data Valid But Below Normal Operating Range – Moderately Severe Level
FMI=19 – Received Network Data In Error
FMI=20 – Data Drifted High
FMI=21 – Data Drifted Low
FMI=31 – Condition Exists

SOURCE ADDRESSES (SA)

NOTE – The available source addresses will vary depending on each vehicle configuration.

NOTE – Diagnostic Trouble Codes listed in this document are Body Controller, Auxiliary Gauge Switch Pack, Secondary Instrument Cluster, Instrument Cluster, Rear HVAC Module, and Compass Module.

DIAGNOSTIC TROUBLE CODE (DTC) LIST

SA	SPN	DTC Description	FMI	Message	Cause	Comments	Pins
33	116	Brake Application Pressure	0	Brake Application Pressure Sensor reading above normal range	Brake Application Sensor Shorted High or faulty sensor system		1600-B14
33 33	116 158	Brake Application Pressure Battery Potential (Voltage), Switched	1 2	Brake Application Pressure Sensor reading below normal range Key State Ignition Signal Error	Brake Application Sensor Short To Ground or Open Circuit or faulty sensor system Open in Ignition Signal Input Circuit To BC		1600-B14 1600-A16
33 33	168 168	Electrical Potential (Voltage) Electrical Potential (Voltage)	2 3	Comm. fault from ESC/BC to PP3. DC Module Overvoltage condition on	Datalink interrupted between ESC and Powerpack. An Over Voltage Condition in the DC	The Power Pack E Module has stopped receiving heart beet message from the ESC/BC. A High Battery Cutout fault has
33	168	Electrical Potential (Voltage)	3	Vehicle DC Bus. AC Module Overvoltage condition on	regulator (Vehicle Battery Bus). An Over Voltage Condition in the AC	occurred and the source of the fault is the DC regulator (Vehicle Battery Bus). A high Battery Cutout fault has
33	168	Electrical Potential (Voltage)	4	High Voltage DC Bus. DC Module Undervoltage condition	module (Inverter High Voltage Bus). An Under Voltage Condition in the DC	occurred and the source of the fault is the AC module (inverter high voltage bus). A Low Battery Cutout fault has
33	168	Electrical Potential (Voltage)	4	on Vehicle DC Bus. AC Module Undervoltage condition	regulator (Vehicle Battery Bus). An Under Voltage Condition in the AC	occurred and the source of the fault is the DC regulator (Vehicle Battery Bus). A low Battery Cutout fault has
33	168	Electrical Potential (Voltage)	6	on High Voltage DC Bus. AC Module has shutdown due to	module (Inverter High Voltage Bus). A Surge may have occurred for a while in	occurred and the source of the fault is the AC module (inverter high voltage bus). An Overload condition has been
33	168	Electrical Potential (Voltage)	8	overload condition. Phase missing fault/alternator fault.	the Vehicle AC bus for a long time (The inverter supplies additional current to the load). One or more of the three phase wire from	detected in the AC module and the Vehicle AC bus is shutdown. One or more of the three phase
33	168	Electrical Potential (Voltage)	16	DC module over temperature	the Dynamic Alternator to the Power Pack E module may be disconnected. An overcurrent condition in the Vehicle DC	wires from the alternator is disconnected. The Power Pack system is shutdown and requires an ignition cycle. An Over Temperature fault has
33	168	Electrical Potential (Voltage)	16	condition. AC module over temperature	Bus might have caused an over temperature. An overcurrent condition in the Vehicle AC	occurred and the source of the fault is the DC regulator (Vehicle Battery Bus). An Over temperature fault has
33	168	Electrical Potential (Voltage)	17	condition. PPE3 Fuse Open.	Bus might have caused an over temperature. Load exceeded rating.	occurred and the source of the fault is the AC module (inverter high voltage bus). PPE3 module Fuse is Open.
33 33	175 175	Engine Oil Temperature 1 Engine Oil Temperature 1	0 1	Engine Oil Temp Sensor reading above normal range Engine Oil Temp Sensor reading	Engine Oil Temperature Sensor Shorted High or Open Circuit or faulty sensor system Engine Oil Temperature Sensor Short to		1600-B6 1600-B6
33	177	Transmission Oil Temperature		below normal range Transmission Oil Temperature	Ground or faulty sensor system Transmission Oil Temperature Sensor		1600-B7
33	177	Transmission Oil Temperature	1	Sensor reading above normal range Transmission Oil Temperature	Shorted High or Open Circuit or faulty sensor system Transmission Oil Temperature Sensor		1600-B7
				Sensor reading below normal range	Short to Ground or faulty sensor system
33 33	247 564	Total Engine Hours Differential Lock State – Central	9 5	Engine Total Hours Not Received Transfer Case Lock Under Current	The Engine Control Module did send the Total Engine Hours or possible Data Link failure Current below normal or open circuit	Not available	Not
33	564	Differential Lock State – Central	6	Or Open Circuit Transfer Case Lock Relay Over	Current above normal or grounded circuit	Not available	available Not
33	566	Differential Lock State – Central Rear	5	Current Power Divider Lock Relay Under	Open Circuit in Power Divider Lock Circuit		available
33	566	Differential Lock State – Central Rear	6	Current Or Open Circuit Power Divider Lock Relay Over	Short To Ground in Power Divider Lock
33	567	Differential Lock State – Front Axle 1	5	Current Forward Axle 1 Diff lock air solenoid	Circuit Current below normal or open circuit	Not available	Not
33	567	Differential Lock State – Front Axle 1	6	output undercurrent or open circuit Forward Axle 1 Diff lock air solenoid	Current above normal or grounded circuit	Not available	available Not
33	569	Differential Lock State – Rear Axle 1	5	output overcurrent Forward Rear Diff Lock Relay Under	Open Circuit in Forward Rear Diff Lock		available
				Current Or Open Circuit	Circuit
33	569	Differential Lock State – Rear Axle 1	6	Forward Rear Diff Lock Relay Over Current	Short To Ground in Forward Rear Diff Lock Circuit
33 33	570 570	Differential Lock State – Rear Axle 2 Differential Lock State – Rear Axle 2	5 6	Rear Rear Diff Lock Relay Under Current Or Open Circuit Rear Rear Diff Lock Relay Over	Open Circuit in Rear Rear Diff Lock Circuit Short To Ground in Rear Rear Diff Lock
33	571	Retarder Enable – Brake Assist	2	Current Retarder Enable – Brake Assist	Circuit Data erratic, intermittent or incorrect
33	576	Switch ASR Off-road Switch	2	On/Off switch failure Traction Disable panel mounted	Data erratic, intermittent or incorrect
33	577	ASR “Hill Holder” Switch	2	switch is in an invalid position HSA Disable Switch error	Fault in HSA Disable Switch	Not available	Not
33	596	Cruise Control Enable Switch		Cruise Control Switch reading above	Shorted High or Open in Cruise Control		available 1600-B16
33	596	Cruise Control Enable Switch	1	normal range Cruise Control Switch reading below	Switches Circuit Short To Ground in Cruise Control		1600-B16
				normal range	Switches Circuit

33	116	Brake Application Pressure	0	Brake Application Pressure Sensor reading above normal range	Brake Application Sensor Shorted High or faulty sensor system		1600-B14
33 33	116 158	Brake Application Pressure Battery Potential (Voltage), Switched	1 2	Brake Application Pressure Sensor reading below normal range Key State Ignition Signal Error	Brake Application Sensor Short To Ground or Open Circuit or faulty sensor system Open in Ignition Signal Input Circuit To BC		1600-B14 1600-A16
33 33	168 168	Electrical Potential (Voltage) Electrical Potential (Voltage)	2 3	Comm. fault from ESC/BC to PP3. DC Module Overvoltage condition on	Datalink interrupted between ESC and Powerpack. An Over Voltage Condition in the DC	The Power Pack E Module has stopped receiving heart beet message from the ESC/BC. A High Battery Cutout fault has
33	168	Electrical Potential (Voltage)	3	Vehicle DC Bus. AC Module Overvoltage condition on	regulator (Vehicle Battery Bus). An Over Voltage Condition in the AC	occurred and the source of the fault is the DC regulator (Vehicle Battery Bus). A high Battery Cutout fault has
33	168	Electrical Potential (Voltage)	4	High Voltage DC Bus. DC Module Undervoltage condition	module (Inverter High Voltage Bus). An Under Voltage Condition in the DC	occurred and the source of the fault is the AC module (inverter high voltage bus). A Low Battery Cutout fault has
33	168	Electrical Potential (Voltage)	4	on Vehicle DC Bus. AC Module Undervoltage condition	regulator (Vehicle Battery Bus). An Under Voltage Condition in the AC	occurred and the source of the fault is the DC regulator (Vehicle Battery Bus). A low Battery Cutout fault has
33	168	Electrical Potential (Voltage)	6	on High Voltage DC Bus. AC Module has shutdown due to	module (Inverter High Voltage Bus). A Surge may have occurred for a while in	occurred and the source of the fault is the AC module (inverter high voltage bus). An Overload condition has been
33	168	Electrical Potential (Voltage)	8	overload condition. Phase missing fault/alternator fault.	the Vehicle AC bus for a long time (The inverter supplies additional current to the load). One or more of the three phase wire from	detected in the AC module and the Vehicle AC bus is shutdown. One or more of the three phase
33	168	Electrical Potential (Voltage)	16	DC module over temperature	the Dynamic Alternator to the Power Pack E module may be disconnected. An overcurrent condition in the Vehicle DC	wires from the alternator is disconnected. The Power Pack system is shutdown and requires an ignition cycle. An Over Temperature fault has
33	168	Electrical Potential (Voltage)	16	condition. AC module over temperature	Bus might have caused an over temperature. An overcurrent condition in the Vehicle AC	occurred and the source of the fault is the DC regulator (Vehicle Battery Bus). An Over temperature fault has
33	168	Electrical Potential (Voltage)	17	condition. PPE3 Fuse Open.	Bus might have caused an over temperature. Load exceeded rating.	occurred and the source of the fault is the AC module (inverter high voltage bus). PPE3 module Fuse is Open.
33 33	175 175	Engine Oil Temperature 1 Engine Oil Temperature 1	0 1	Engine Oil Temp Sensor reading above normal range Engine Oil Temp Sensor reading	Engine Oil Temperature Sensor Shorted High or Open Circuit or faulty sensor system Engine Oil Temperature Sensor Short to		1600-B6 1600-B6
33	177	Transmission Oil Temperature		below normal range Transmission Oil Temperature	Ground or faulty sensor system Transmission Oil Temperature Sensor		1600-B7
33	177	Transmission Oil Temperature	1	Sensor reading above normal range Transmission Oil Temperature	Shorted High or Open Circuit or faulty sensor system Transmission Oil Temperature Sensor		1600-B7
				Sensor reading below normal range	Short to Ground or faulty sensor system
33 33	247 564	Total Engine Hours Differential Lock State – Central	9 5	Engine Total Hours Not Received Transfer Case Lock Under Current	The Engine Control Module did send the Total Engine Hours or possible Data Link failure Current below normal or open circuit	Not available	Not
33	564	Differential Lock State – Central	6	Or Open Circuit Transfer Case Lock Relay Over	Current above normal or grounded circuit	Not available	available Not
33	566	Differential Lock State – Central Rear	5	Current Power Divider Lock Relay Under	Open Circuit in Power Divider Lock Circuit		available
33	566	Differential Lock State – Central Rear	6	Current Or Open Circuit Power Divider Lock Relay Over	Short To Ground in Power Divider Lock
33	567	Differential Lock State – Front Axle 1	5	Current Forward Axle 1 Diff lock air solenoid	Circuit Current below normal or open circuit	Not available	Not
33	567	Differential Lock State – Front Axle 1	6	output undercurrent or open circuit Forward Axle 1 Diff lock air solenoid	Current above normal or grounded circuit	Not available	available Not
33	569	Differential Lock State – Rear Axle 1	5	output overcurrent Forward Rear Diff Lock Relay Under	Open Circuit in Forward Rear Diff Lock		available
				Current Or Open Circuit	Circuit
33	569	Differential Lock State – Rear Axle 1	6	Forward Rear Diff Lock Relay Over Current	Short To Ground in Forward Rear Diff Lock Circuit
33 33	570 570	Differential Lock State – Rear Axle 2 Differential Lock State – Rear Axle 2	5 6	Rear Rear Diff Lock Relay Under Current Or Open Circuit Rear Rear Diff Lock Relay Over	Open Circuit in Rear Rear Diff Lock Circuit Short To Ground in Rear Rear Diff Lock
33	571	Retarder Enable – Brake Assist	2	Current Retarder Enable – Brake Assist	Circuit Data erratic, intermittent or incorrect
33	576	Switch ASR Off-road Switch	2	On/Off switch failure Traction Disable panel mounted	Data erratic, intermittent or incorrect
33	577	ASR “Hill Holder” Switch	2	switch is in an invalid position HSA Disable Switch error	Fault in HSA Disable Switch	Not available	Not
33	596	Cruise Control Enable Switch		Cruise Control Switch reading above	Shorted High or Open in Cruise Control		available 1600-B16
33	596	Cruise Control Enable Switch	1	normal range Cruise Control Switch reading below	Switches Circuit Short To Ground in Cruise Control		1600-B16
				normal range	Switches Circuit

33	1837	Convoy Driving Lamp Select	6	BO Drive Overcurrent	Current above normal or grounded circuit Not available
33	1840	Rear Black Out Marker Select	6	BO Marker Overcurrent	Current above normal or grounded circuit Not available
33	1841	Black Out Brake/Stop Lamp Select	6	BO Stop Overcurrent	Current above normal or grounded circuit Not available
33 33	2000 2000	Source Address 0 Source Address 0	9 19	ECM Data Link Comm. Failure PTC1 (PGN 64892) not Received	Faulty ECM or Drivetrain Data Link ECM not Programmed for Aftertreatment,
				from Engine	Faulty ECM, or Faulty Drivetrain Data Link
33 33	2003 2011	Source Address 3 Source Address 11	9 9	TCM Data Link Comm. Failure ABS Data Link Comm. Failure	Faulty TCM or Drivetrain Data Link Faulty ABS Module or Drivetrain Data Link
33	2023	Gauge Cluster	9	EGC Data Link Comm. Failure	Faulty EGC or Drivetrain Data Link
33	2040	Auxiliary Switch Pack #1	9	AGSP #1 Data Link Comm. Failure	Abnormal update rate
33	2058	Source Address 58	9	Rear HVAC Data Link	Faulty Rear HVAC or Body Builder Data
33	2058	Source Address 58	14	Communication Failure Rear HVAC Data Link	Link Faulty Rear HVAC or Body Builder Data
33	2062	Source Address 62	9	Communication Failure Meritor Wabco Brake Controller Data	Link Faulty Meritor Wabco Brake Controller Not available
33	2225	Remote Power Module #1 Fuse	9	Link Comm. Failure to BC RPM #1 Data Link Comm. Failure	Module Data Link Abnormal update rate
33	2225	Remote Power Module #1 Fuse	14	Remote Power Module #1 (address	Drivetrain J1939 data link, an improperly
				225) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2226 2226	Remote Power Module #2 Fuse Remote Power Module #2 Fuse	9 14	RPM #2 Data Link Comm. Failure Remote Power Module #2 (address	Abnormal update rate Drivetrain J1939 data link, an improperly
				226) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2227 2227	Source Address 227 Source Address 227	9 14	RPM #3 Data Link Comm. Failure Remote Power Module #3 (address	Abnormal update rate Drivetrain J1939 data link, an improperly
				227) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2228 2228	Remote Power Module #4 Fuse Remote Power Module #4 Fuse	9 14	RPM #4 Data Link Comm. Failure Remote Power Module #4 (address	Abnormal update rate Drivetrain J1939 data link, an improperly
				228) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2229 2229	Source Address 229 Source Address 229	9 14	RPM #5 Data Link Comm. Failure Remote Power Module #5 (address	Abnormal update rate Drivetrain J1939 data link, an improperly
				229) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2230 2230	Source Address 230 Source Address 230	9 14	RPM #6 Data Link Comm. Failure Remote Power Module #6 (address	Abnormal update rate Drivetrain J1939 data link, an improperly
				230) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2231 2231	Remote Power Module #7 Fuse Remote Power Module #7 Fuse	9 14	RPM #7 Data Link Comm. Failure Remote Power Module #7 (address	Abnormal update rate Drivetrain J1939 data link, an improperly
				231) has an address problem.	addressed RPM module, or a missing RPM module that the BC is expecting
33 33	2233 2234	Source Address 233 Remote Air Solenoid #2 Fuse	9 9	Rear Driver Door Pod Data Link Comm. Failure Rear Passenger Door Pod Data Link	Faulty Rear Driver Door Pod Module or Switch Data Link Faulty Rear Passenger Door Pod Module
33	2236	Source Address 236	9	Comm. Failure Driver Door Pod Data Link Comm.	or Switch Data Link Faulty Driver Door Pod Module or Switch
33	2237	Source Address 237	9	Failure Passenger Door Pod Data Link	Data Link Faulty Passenger Door Pod Module or
33	2239	Source Address 239	9	Comm. Failure HCM Data Link Comm. Failure	Switch Data Link Faulty HCM or Drivetrain Data Link
33	2239	Source Address 239	14	HCM Address Conflict	Drivetrain J1939 data link, an improperly
33	2247	Source Address 247	9	Communication fault from PP3 to	addressed HCM, or a missing HCM that the BC is expecting Private J1939 datalink problem (exceeded BC has failed to receive heartbeat
33	2361	Tractor Rear High Mounted Work	2	BC. Work Light Switch Error	bandwidth). message from PowerPack E module. Faulty Switch Actuator or Microswitch for
33	2362	Lights Command Tractor Rear High Mounted Work	5	Work Light Undercurrent	Work Light Switch Open in Work Light Circuit
33	2362	Lights Tractor Rear High Mounted Work	6	Work Light Overcurrent	Short To Ground or Overload in Work
33	2368	Lights Left Turn Signal Lights	5	Left Front Turn Lamp Undercurrent	Light Circuit Open in Left Front Turn Signal Circuit
33	2368	Left Turn Signal Lights	6	Left Front Turn Lamp Overcurrent	Short To Ground or Overload in Left Front
33	2370	Right Turn Signal Lights	5	Right Front Turn Lamp Undercurrent	Turn Signal Circuit Open in Right Front Turn Signal Circuit
33	2370	Right Turn Signal Lights	6	Right Front Turn Lamp Overcurrent	Short To Ground or Overload in Right
33	2372	Left Stop Light	5	Left Rear Turn Lamp Undercurrent	Front Turn Signal Circuit Open in Left Rear Turn Signal Circuit
33	2372	Left Stop Light	6	Left Rear Turn Lamp Overcurrent	Short To Ground or Overload in Left Rear
33	2374	Right Stop Light	5	Right Rear Turn Lamp Undercurrent	Turn Signal Circuit Open in Right Rear Turn Signal Circuit
33	2374	Right Stop Light	6	Right Rear Turn Lamp Overcurrent	Short To Ground or Overload in Right

33 33	881 881	Right Turn Lamp Circuit (Green) Right Turn Lamp Circuit (Green)	5 6	Trailer Right Turn Lamp Relay Under Current Or Open Circuit Trailer Right Turn Lamp Relay Over	Open Circuit in Trailer Right Turn Lamp Circuit Short To Ground in Trailer Right Turn	1601-E15 1601-E15
33	882	Tail Lamp/License Plate Lamp	5	Current Trailer License Plate Lamp Relay	Lamp Circuit Open Circuit in Trailer License Plate	1601-E10
33	882	Circuit (Brown) Tail Lamp/License Plate Lamp	6	Under Current Or Open Circuit Trailer License Plate Lamp Relay	Lamp Circuit Short To Ground in Trailer License Plate	1601-E10
33	973	Circuit (Brown) Engine Retarder Selection	2	Over Current Engine Retarder Level Selection	Lamp Circuit Faulty Switch Actuator or Microswitch for
				Switch Error	Engine Retarder Level Select Switch
33	980	PTO Enable Switch	2	Engine PTO Switch Error	Data erratic, intermittent or incorrect
33 33	986 1043	Requested Percent Fan Speed Internal Sensor Voltage Supply	2	Engine Fan Switch Error Bias Voltage reading above normal	Faulty Switch Actuator or Microswitch for Engine Fan Switch Bias Voltage Circuit Shorted High
33	1043	Internal Sensor Voltage Supply	1	range Bias Voltage reading below normal	Short To Ground in Bias Voltage Circuit
33	1079	Vref Sensor Supply Voltage		range 5V Sensor Supply Above Normal	Data valid but above normal operational
33	1079	Vref Sensor Supply Voltage	1	Range 5V Sensor Supply Below Normal	range – most severe level Data valid but below normal operational
33	1081	Wait to Start Lamp	4	Range Wait to Start Lamp	range – most severe level Output shorted to ground
33	1081	Wait to Start Lamp	6	Wait to Start Lamp	Output overheat
33 33	1087 1087	Service Brake Air Pressure Circuit #1 Service Brake Air Pressure Circuit #1	0 1	Primary Air Tank Sensor reading above normal range Primary Air Tank Sensor reading	Primary Air Tank Sensor Shorted High or faulty sensor system Primary Air Tank Sensor Short To Ground	1600-B2 1600-B2
				below normal range	or Open Circuit or faulty sensor system
33 33	1088 1088	Service Brake Air Pressure Circuit #2 Service Brake Air Pressure Circuit #2	0 1	Secondary Air Tank Sensor reading above normal range Secondary Air Tank Sensor reading	Secondary Air Tank Sensor Shorted High or faulty sensor system Secondary Air Tank Sensor Short To	1600-B3 1600-B3
33	1089	Auxiliary Equipment Supply Pressure		below normal range Auxiliary Air Tank Sensor Reading	Ground or Open Circuit or faulty sensor system Short to High in Air Pressure Auxiliary	1600-B2
33	1089	Auxiliary Equipment Supply Pressure	1	Above Normal Auxiliary Air Tank Sensor Reading	Sensor Circuit Short to Ground or Open in Air Pressure	1600-B2
33	1231	Body Address Claim/Message	9	Below Normal J1939 Body Builder Data Link Lost	Auxiliary Sensor Circuit Faulty BC or Bodybuilder Data Link
33	1231	Timeout Body Address Claim/Message	14	Global Broadcast Messages, J1939,
		Timeout		proprietary, private bus (body builder) (address 255) has an unknown fault.
33 33	1238 1378	Traction Control Override Switch Change Oil Lamp	2 4	ATC OFF-ROAD Switch Error Change Oil Lamp	Faulty Switch Actuator or Micro switch for ATC OFF-ROAD Switch Output shorted to ground
33	1378	Change Oil Lamp	6	Change Oil Lamp	Output overheat
33 33	1382 1547	Fuel Filter (suction side) Differential Pressure A/C Evaporator Temperature	14	The filter between the fuel pump and the fuel tank is plugged. HVAC Inlet Temp Sensor reading	Heavy build up of particulate matter in the The detection has indicated a value fuel filter preventing fuel flow. of 51 on the fuel filter signal which indicates a severely restricted or plugged condition. HVAC Refrigerant Inlet Temperature	1600-B5
33	1547	A/C Evaporator Temperature	1	above normal range HVAC Inlet Temp Sensor reading	Sensor Shorted High or Open Circuit or faulty sensor system HVAC Refrigerant Inlet Temperature	1600-B5
33	1548	HVAC Duct Temperature		below normal range HVAC Outlet Temp Sensor reading	Sensor Short To Ground or faulty sensor system HVAC Refrigerant Outlet Temperature	1600-B13
33	1548	HVAC Duct Temperature	1	above normal range HVAC Outlet Temp Sensor reading	Sensor Shorted High or Open Circuit or faulty sensor system HVAC Refrigerant Outlet Temperature	1600-B13
33	1552	Operator Input device for Cab	2	below normal range HVAC Control Head Temperature	Sensor Short To Ground or faulty sensor system HVAC Motor in Wrong Position or
33	1553	Climate Control HVAC Blower Motor Speed		Mix DM1 HVAC Blower Speed Analog Input	Jammed HVAC Blower Speed Control Shorted	1600-B15
33	1553	Adjustment HVAC Blower Motor Speed	1	reading above normal range HVAC Blower Speed Analog Input	High or Open Circuit or faulty sensor system HVAC Blower Speed Control Short To	1600-B15
33	1660	Adjustment Engine Automatic Start Alarm	5	reading below normal range Remote Start Alarm Buzzer Relay	Ground or faulty sensor system Open Circuit in Remote Start Alarm
33	1660	Engine Automatic Start Alarm	6	Under Current Or Open Circuit Remote Start Alarm Buzzer Relay	Buzzer Circuit Short To Ground in Remote Start Alarm
33	1709	Transmission Controller Power	5	Over Current PRNDL Pseudo ignition relay driver	Buzzer Circuit Current below normal or open circuit	1601-E3
33	1709	Relay Transmission Controller Power	6	output Under Current Or Open Circuit PRNDL Pseudo ignition relay driver	Current above normal or grounded circuit	1601-E3
33	1716	Relay Retarder Selection, non-engine	2	output overcurrent Transmission Retarder Level	Data erratic, intermittent or incorrect
33	1741	Level Control Mode		Selection Switch Failure Mode Selection Switch Damaged or	Data Valid but Above Normal Range, Not available	Not
33	1741	Level Control Mode	1	Not Connected Possible ECU Malfunction	Most Severe Data Valid, but Below Normal Range, Not available	available Not
33	1747	Kneeling Control Mode Request	2	Suspension Dump Switch Error	Most Severe Faulty Switch Actuator or Microswitch for	available
33	1755	Lowering Control Mode Rear Axle	5	Suspension Dump Solenoid B Relay	Suspension Dump Switch Open Circuit in Suspension Dump
				Under Current Or Open Circuit	Solenoid B Circuit
33 33	1755 1756	Lowering Control Mode Rear Axle Lifting Control Mode Rear Axle	6 5	Suspension Dump Solenoid B Relay Over Current Suspension Dump Solenoid A Relay	Short To Ground in Suspension Dump Solenoid B Circuit Open Circuit in Suspension Dump
				Under Current Or Open Circuit	Solenoid A Circuit
33 33	1756 1820	Lifting Control Mode Rear Axle Ramp / Wheel Chair Lift Position	6 5	Suspension Dump Solenoid A Relay Over Current Wheelchair Lift Solenoid Relay	Short To Ground in Suspension Dump Solenoid A Circuit Current below normal or open circuit	1601-E1
33	1820	Ramp / Wheel Chair Lift Position	6	Under Current Or Open Circuit Wheelchair Lift Solenoid Relay Short	Current above normal or grounded circuit	1601-E1
				To Ground

33	2378	Tractor Marker Light	5	Park Lights Undercurrent	Open in Park Lights Circuit		1604-G
33	2378	Tractor Marker Light	6	Park Lights Overcurrent	Short To Ground or Overload in Park		1604-G
					Lights Circuit
33	2387	Tractor Front Fog Lights Command	2	Fog Light Switch Error	Faulty Switch Actuator or Microswitch for
					Fog Lights Switch
33	2388	Fog Light 1 command	5	Fog Lights Relay Under Current Or	Current below normal or open circuit		1603-F
				Open Circuit
33	2388	Fog Light 1 command	6	Fog Lights Relay Overcurrent	Current above normal or grounded circuit		1603-F
33	2389	Rear Fog Light Command	2	Rear Fog Light Switch error	Faulty Switch Actuator or Microswitch for	Not available	Not
					Rear Fog Lights Switch		available
33	2390	Rear Fog Lights	5	Rear Fog Light Relay Under Current	Under Current Or Open Circuit in Rear	Not available	Not
				Or Open Circuit	Fog Light Relay Driver		available
33	2390	Rear Fog Lights	6	Rear Fog Lights Relay Overcurrent	Short circuit in Rear Fog Light Relay	Not available	Not
					Driver		available
33	2392	Back Up Light and Alarm Horn	5	Reverse Lights Relay Under Current	Current below normal or open circuit		1601-E4
				Or Open Circuit
33	2392	Back Up Light and Alarm Horn	6	Reverse Lights Relay Overcurrent	Current above normal or grounded circuit		1601-E4

33	2404	Running Light	5	Running Light Control relay Under	Open Circuit in Running Lights Circuit		1601-F16
				Current Or Open Circuit
33	2404	Running Light	6	Running Light Control relay Over	Short To Ground in Running Lights Circuit		1601-F16
				Current
33	2609	Cab A/C Refrigerant Compressor	0	HVAC Pressure Sensor reading	HVAC Pressure Sensor Shorted High or		1600-B12
		Outlet Pressure		above normal range	faulty sensor system
33	2609	Cab A/C Refrigerant Compressor	1	HVAC Pressure Sensor reading	HVAC Pressure Short To Ground or Open		1600-B12
		Outlet Pressure		below normal range	Circuit or faulty sensor system
33	2609	Cab A/C Refrigerant Compressor	7	AC – Service Now. Fan	At the current operating ambient
		Outlet Pressure		Problem/Clogged Pipe	temperature the engine fan isn’t working,
					one of the AC lines has become plugged
					or the system is over-charged. The
					compressor is shut off to prevent damage.
33	2609	Cab A/C Refrigerant Compressor	16	HVAC High Pressure Protection	HVAC Head Pressure exceeded 480 psi.
		Outlet Pressure			Compressor shut off until next key cycle
					for system protection
33	2636	Windshield Wiper Motor ON/OFF	5	Wiper On/Off Relay Under Current	Open Circuit in Wiper On/Off Circuit		1601-E7
				Or Open Circuit
33	2636	Windshield Wiper Motor ON/OFF	6	Wiper On/Off Relay Over Current	Short To Ground in Wiper On/Off Circuit		1601-E7

33	2637	Windshield Wiper Motor Speed	5	Wiper High/Low Relay Under Current	Open Circuit in Wiper High/Low Circuit		1601-E6
				Or Open Circuit
33	2637	Windshield Wiper Motor Speed	6	Wiper High/Low Relay Over Current	Short To Ground in Wiper High/Low		1601-E6
					Circuit
33	2641	Horn	5	Electric Horn Undercurrent	Open in Electric Horn Circuit		1603-E
33	2641	Horn	6	Electric Horn Overcurrent	Short To Ground or Overload in City Horn		1603-E
					Circuit
33	2642	Mirror Heat 1	5	Left Mirror Heat Undercurrent	Open in Left Mirror Heat Circuit		1603-H
33	2642	Mirror Heat 1	6	Left Mirror Heat Overcurrent	Short to Ground or Overload in Left Mirror		1603-H
					Heat Circuit
33	2653	Headlamp Low Beam Left #1	5	Left Low Beam Under Current	Open in Left Low Beam Circuit		1604-B
33	2653	Headlamp Low Beam Left #1	6	Left Low Beam Short To Ground	Short To Ground or Overload in Left Low		1604-B
					Beam Circuit
33	2655	Headlamp Low Beam Right #1	5	Right Low Beam Open Circuit	Open in Right Low Beam Circuit		1604-H
33	2655	Headlamp Low Beam Right #1	6	Right Low Beam Short To Ground	Short to Ground or Overload in Right Low		1604-H
					Beam Circuit
33	2796	Transfer Case Selector Switch	2	Front Axle Switch Error	Data erratic, intermittent or incorrect

33	2819	Park Interlock Error	5	Park Position Interlock Solenoid	Current below normal or open circuit		1601-E8
				Output is Under Current Or Open
				Circuit.
33	2819	Park Interlock Error	6	Park Position Interlock Solenoid	Current above normal or grounded circuit		1601-E8
				Output is overcurrent.
33	3313	Fifth Wheel Lock Couple Status	5	Fifth Wheel Jaw Unlock Solenoid 1	Open Circuit or Defective Solenoid
		Indicator		output is Under Current Or Open
				Circuit
33	3313	Fifth Wheel Lock Couple Status	6	Fifth Wheel Jaw Unlock Solenoid 1	Short To Ground or Defective Solenoid
		Indicator		output is Overcurrent
33	3314	Fifth Wheel Release Control	2	Fifth Wheel Jaw Unlock Switch state is invalid	Data erratic, intermittent or incorrect
33	3316	Fifth Wheel Slider Lock Indicator	5	Fifth Wheel Slide Under Current Or	Open Circuit in Fifth Wheel Slide Circuit
				Open Circuit
33	3316	Fifth Wheel Slider Lock Indicator	6	Fifth Wheel Slide Over Current	Short To Ground in Fifth Wheel Slide
					Circuit
33	3412	Lock Status of Door 1	7	Driver Door Lock Motor Failure	Driver Door Pod Module Has Shorted,
					Opened, or Jammed Solenoid
33	3415	Lock Status of Door 2	7	Passenger Door Lock Motor Failure	Passenger Door Pod Module Has
					Shorted, Opened, or Jammed Solenoid
33	3418	Lock Status of Door 3	7	Rear Driver Door Lock Motor failure	Rear Driver Door Pod Module Has
					Shorted, Opened, or Jammed Solenoid
33	3421	Lock Status of Door 4	7	Rear Passenger Door Lock Motor	Rear Passenger Door Pod Module Has
				failure	Shorted, Opened, or Jammed Solenoid
33	3452	Enable Switch – Transmission input	2	Transmission PTO A Switch Error	Faulty Switch Actuator or Microswitch for
		shaft PTO 1			Transmission PTO A Switch
33	3452	Enable Switch – Transmission input	2	PTO Engagement Switch Error	Faulty Switch Actuator or Microswitch for
		shaft PTO 1			Transmission PTO A Switch
33	3453	Enable Switch – Transmission input	2	Transmission PTO B Switch Error	Faulty Switch Actuator or Microswitch for
		shaft PTO 2			Transmission PTO B Switch
33	3455	Enable Switch – Transfer case output	2	Transfer Case Switch Error	Data erratic, intermittent or incorrect
		shaft PTO
33	3455	Enable Switch – Transfer case output	2	Transfer Case PTO Switch Error	Data erratic, intermittent or incorrect
		shaft PTO
33	3456	Engagement Consent –	5	Transmission PTO A Solenoid Relay	Open Circuit in Transmission PTO A
		Transmission input shaft PTO 1		Under Current Or Open Circuit	Solenoid Circuit
33	3456	Engagement Consent –	6	Transmission PTO A Solenoid Relay	Short To Ground in Transmission PTO A
		Transmission input shaft PTO 1		Over Current	Solenoid Circuit
33	3457	Engagement Consent –	5	Transmission PTO B Solenoid Relay	Open Circuit in Transmission PTO B
		Transmission input shaft PTO 2		Under Current Or Open Circuit	Solenoid Circuit
33	3457	Engagement Consent –	6	Transmission PTO B Solenoid Relay	Short To Ground in Transmission PTO B
		Transmission input shaft PTO 2		Over Current	Solenoid Circuit

33 33	3461 3461	Engagement Status – Transmission input shaft PTO 2 Engagement Status – Transmission	5 6	PTO Air Solenoid Under Current Or Open Circuit PTO Air Solenoid Overcurrent	Current below normal or open circuit Current above normal or grounded circuit
33	3695	input shaft PTO 2 Regen Inhibit Switch Indicator	2	Regen Inhibit Switch Error	Faulty Switch Actuator or Microswitch for
33	3696	Parked Regen Switch Indicator	5	Open Circuit in Regen Inhibit Switch	Regen Inhibit Switch Open Circuit in the Regen Inhibit Switch
33	3696	Parked Regen Switch Indicator	6	Indicator Circuit. Over current for Parked Regen	Indicator Circuit. Over current or Short to Battery for the
33	3696	Parked Regen Switch Indicator	2	Switch Indicator Parked Regen Switch Error	Parked Regen Switch Indicator. Faulty Switch Actuator or Microswitch for
33	3697	Particulate Trap Lamp Command	5	Particulate Trap Lamp Relay Under	Parked Regen Switch Open Circuit in Particulate Trap Lamp
33	3697	Particulate Trap Lamp Command	6	Current Or Open Circuit Particulate Trap Lamp Relay Over	Circuit Short to Ground in Particulate Trap Lamp
33	3698	Exhaust System High Temperature	5	Current Exhaust System High Temperature	Circuit Open Circuit in Exhaust System High
33	3698	Lamp Command Exhaust System High Temperature	6	Lamp Command Under Current Or Open Circuit Exhaust System High Temperature	Temperature Circuit Short to Ground in Exhaust System High
		Lamp Command		Lamp Command Over Current	Temperature Circuit
33	3950	Air Horn	5	Air Horn Undercurrent	Open in Air Horn Circuit	1602-E12
33	3950	Air Horn	6	Air Horn Overcurrent	Short To Ground or Overload in Air Horn	1602-E12
33	3952	Air Shield Light	6	Air Shield Lighting Overcurrent	Circuit Short To Ground or Overload in Air Shield	1604-F
33	3957	Auxiliary Transmission Constant	5	Auxiliary Transmission Solenoid B	Light Circuit Current below normal or open circuit
33	3957	Supply Actuator Auxiliary Transmission Constant	6	(Constant Supply) output is Under Current Or Open Circuit. Auxiliary Transmission Solenoid B	Current above normal or grounded circuit
33	3958	Supply Actuator Auxiliary Transmission High Range	5	(Constant Supply) output is overcurrent. Auxiliary Transmission Solenoid C	Current below normal or open circuit
33	3958	Actuator Auxiliary Transmission High Range	6	(High) Output is Under Current Or Open Circuit. Auxiliary Transmission Solenoid C	Current above normal or grounded circuit
33	3959	Actuator Auxiliary Transmission Neutral	5	(High) output is overcurrent. Auxiliary Transmission Solenoid A	Current below normal or open circuit
33	3959	Actuator Auxiliary Transmission Neutral	6	(Neutral) output is Under Current Or Open Circuit. Auxiliary Transmission Solenoid A	Current above normal or grounded circuit
33	3960	Actuator Auxiliary Transmission Range Switch	2	(Neutral) output is overcurrent. Auxiliary Transmission High/Low	Data erratic, intermittent or incorrect
33	3961	Body Equipment Hydraulic Power	5	Switch state is invalid. TEM Epump Inhibit Relay Under	Current below normal or open circuit	1601-E1
33	3961	Auxiliary Pump Inhibit Command Body Equipment Hydraulic Power	6	Current Or Open Circuit TEM Epump Inhibit Relay Over	Current above normal or grounded circuit	1601-E1
33	3962	Auxiliary Pump Inhibit Command Bus Amber Signal Light 1	5	Current Left Front Amber PWL Undercurrent	Current below normal or open circuit	1603-C
33	3962	Bus Amber Signal Light 1	6	Left Front Amber PWL Overcurrent	Current above normal or grounded circuit	1603-C
33 33	3963 3963	Bus Amber Signal Light 2 Bus Amber Signal Light 2	5 6	Right Front Amber PWL Undercurrent Right Front Amber PWL Overcurrent	Current below normal or open circuit Current above normal or grounded circuit	1604-J 1604-J
33	3964	Bus Amber Signal Light 3	5	Left Rear Amber PWL Undercurrent	Current below normal or open circuit	1603-G
33	3964	Bus Amber Signal Light 3	6	Left Rear Amber PWL Overcurrent	Current above normal or grounded circuit	1603-G
33	3965	Bus Amber Signal Light 4	5	Right Rear Amber PWL	Current below normal or open circuit	1603-K
33	3965	Bus Amber Signal Light 4	6	Undercurrent Right Rear Amber PWL Overcurrent	Current above normal or grounded circuit	1603-K
33	3966	Bus Crossing Gate	5	Crossing Gate output is	Current below normal or open circuit	1602-E12
33	3966	Bus Crossing Gate	6	undercurrent. Crossing Gate output is overcurrent.	Current above normal or grounded circuit	1602-E12
33 33	3967 3967	Bus Passenger Door Close Relay Bus Passenger Door Close Relay	5 6	Bus Entrance Door Close Relay Driver Output is Under Current Or Open Circuit Bus Entrance Door Close Relay	Current below normal or open circuit Current above normal or grounded circuit	1601-E9 1601-E9
33	3969	Bus Passenger Door Control Switch		Driver Output is overcurrent Bus Entrance Door Steering Wheel	Bus Door Control Switches Circuit Open	1600-B16
		2		Switch Input Above Normal Range	or Shorted High
33	3969	Bus Passenger Door Control Switch 2	1	Bus Entrance Door Steering Wheel Switch Input Below Normal Range	Short To Ground in Bus Door Control Switches Circuit	1600-B16
33 33	3970 3970	Bus Passenger Door Open Relay Bus Passenger Door Open Relay	5 6	Bus Entrance Door Open Relay Driver Output is Under Current Or Open Circuit Bus Entrance Door Open Relay	Current below normal or open circuit Current above normal or grounded circuit	1601-E13 1601-E13
33	3971	Bus Red Signal Light 1	5	Driver Output is overcurrent Left Front Red PWL Undercurrent	Current below normal or open circuit	1603-H
33	3971	Bus Red Signal Light 1	6	Left Front Red PWL Overcurrent	Current above normal or grounded circuit	1603-H
33	3972	Bus Red Signal Light 2	5	Right Front Red PWL Undercurrent	Current below normal or open circuit	1603-F
33	3972	Bus Red Signal Light 2	6	Right Front Red PWL Overcurrent	Current above normal or grounded circuit	1603-F
33	3973	Bus Red Signal Light 3	5	Left Rear Red PWL Undercurrent	Current below normal or open circuit	1603-J
33	3973	Bus Red Signal Light 3	6	Left Rear Red PWL Overcurrent	Current above normal or grounded circuit	1603-J
33	3974	Bus Red Signal Light 4	5	Right Rear Red PWL Undercurrent	Current below normal or open circuit	1603-L
33	3974	Bus Red Signal Light 4	6	Right Rear Red PWL Overcurrent	Current above normal or grounded circuit	1603-L
33	3975	Bus Stop Arm	5	Bus Stop Arm Output is Under	Current below normal or open circuit	1601-E2
33	3975	Bus Stop Arm	6	Current Or Open Circuit Bus Stop Arm Output is over current	Current above normal or grounded circuit	1601-E2
33	3976	Cab Dome Light 1	5	Cab Dome Light Open Circuit	Open in Cab Dome Light Circuit	1604-J

33	3976	Cab Dome Light 1	6	Cab Dome Light Short To Ground	Short To Ground or Overload in Cab	1604-J
					Dome Light Circuit
33	3977	Cab Dome Light 2	5	Sleeper Dome Light Relay Under	Open Circuit in Sleeper Dome Light	1601-F2
				Current Or Open Circuit	Circuit
33	3977	Cab Dome Light 2	6	Sleeper Dome Light Over Current	Short To Ground in Sleeper Dome Light	1601-F2
					Circuit
33	3978	Cab Dome Light 2 Switch	2	Sleeper Dome / Floor Search Light	Faulty Switch Actuator or Microswitch for
				Switch Error	Sleeper Dome / Floor Search Light Switch
33	3979	Cab Floor Light	5	Floor Lights Relay Under Current Or	Open Circuit in Floor Light Circuit	1601-E5
				Open Circuit
33	3979	Cab Floor Light	6	Floor Lights Relay Over Current	Short To Ground in Floor Light Circuit	1601-E5
33	3981	Cab HVAC Mode Control Actuator	2	HVAC Control Head Mode Fault	HVAC Motor in Wrong Position or
				DM1	Jammed
33	3982	Cab HVAC Rear Blower Speed	2	HVAC Rear Blower Speed Control	Faulty Switch Actuator or Microswitch for
		Control Switch		Switch Error	HVAC Rear Blower Speed Control Switch
33	3983	Cab HVAC Rear Temperature	2	Rear HVAC Temperature Control	Faulty Switch Actuator or Microswitch for
		Control Switch		Switch Error	Rear HVAC Temperature Control Switch
33	3984	Cab HVAC Recirculation Door	2	HVAC Control Head Air Inlet DM1	HVAC Motor in Wrong Position or
		Control Actuator			Jammed
33	3985	Cab HVAC System Controller	9	HVAC Control Head Circuit Failed To	Abnormal update rate
				Communicate With the Body
				Controller
33	3987	Compression Brake Enable Switch	5	Compression Brake Indicator output	Current below normal or open circuit	1601-E4
		Indicator Lamp		is Under Current Or Open Circuit
33	3987	Compression Brake Enable Switch	6	Compression Brake Indicator is over	Current above normal or grounded circuit	1601-E4
		Indicator Lamp		current
33	3988	Door 1 Control Module	7	Driver Door Pod Module Failure	Defective Driver Door Pod Module

33	3989	Door 1 Window Motor	7	Driver Window Motor Failure	Driver Door Pod Module Window Motor
					Has Short or Open or Window is Jammed
33	3990	Door 2 Control Module	7	Passenger Door Pod Module Failure	Defective Passenger Door Pod Module
33	3991	Door 2 Window Motor	7	Passenger Window Motor Failure	Passenger Door Pod Module Window
					Motor Has Short or Open or Window is
					Jammed
33	3992	Door 3 Control module	7	Rear Driver Door Pod Module Failure	Defective Rear Driver Door Pod Module

33	3993	Door 3 Window Motor	7	Rear Driver Window Motor Failure	Rear Driver Door Pod Module Window
					Motor Has Short or Open or Window is
					Jammed
33	3994	Door 4 Control Module	7	Rear Passenger Door Pod Module	Defective Rear Passenger Door Pod
				Failure	Module
33	3995	Door 4 Window Motor	7	Rear Passenger Window Motor	Rear Passenger Door Pod Module
				Failure	Window Motor Has Short or Open or
					Window is Jammed
33	3997	Electrical Accessory Power Relay	5	Electrical Accessory Request Relay	Open Circuit in Electrical Accessory	1601-E11
				Under Current Or Open Circuit	Request Circuit
33	3997	Electrical Accessory Power Relay	6	Electrical Accessory Request Relay	Short To Ground in Electrical Accessory	1601-E11
				Over Current	Request Circuit
33	3998	Electrical Load Shed OFF	5	Load Shed OFF Relay Under	Open Circuit in Load Shed OFF Circuit	1601-F7
				Current Or Open Circuit
33	3998	Electrical Load Shed OFF	6	Load Shed OFF Relay Over Current	Short To Ground in Load Shed OFF	1601-F7
					Circuit
33	3999	Electrical Load Shed ON	5	Load Shed ON Relay Under Current	Open Circuit in Load Shed ON Circuit	1601-F6
				Or Open Circuit
33	3999	Electrical Load Shed ON	6	Load Shed ON Relay Over Current	Short To Ground in Load Shed ON Circuit	1601-F6

33	4002	Engine Remote Start	6	TEM Engine Crank Relay Over	Current above normal or grounded circuit
				Current
33	4003	Engine Remote Stop	5	TEM Engine Stop Relay Under	Current below normal or open circuit	1601-E2
				Current Or Open Circuit
33	4003	Engine Remote Stop	6	TEM Engine Stop Relay Over	Current above normal or grounded circuit	1601-E2
				Current
33	4004	Exterior Lamp Check Switch	2	Exterior Lamp Check Switch Error	Data erratic, intermittent or incorrect
33	4007	Fifth Wheel Slide Lock Switch	2	Fifth Wheel Slide Switch Error	Faulty Switch Actuator or Microswitch for
					Fifth Wheel Slide Switch
33	4008	Fog Light 2	5	Right Fog Light Undercurrent	Open in Right Fog Light Circuit	1603-K

33	4008	Fog Light 2	6	Right Fog Light Overcurrent	Short To Ground or Overload in Right Fog	1603-K
					Light Output Circuit
33	4009	Fuel Filter Fuel Heater Relay	5	Fuel Heater Relay Under Current Or	Open Circuit in Fuel Heater Circuit	1601-F12
				Open Circuit
33	4009	Fuel Filter Fuel Heater Relay	6	Fuel Heater Relay Over Current	Short To Ground in Fuel Heater Circuit	1601-F12
33	4010	Fuel Tank Transfer Pump	5	Fuel Transfer Pump Relay Under	Open Circuit in Fuel Transfer Pump	1601-F11
				Current Or Open Circuit	Circuit
33	4010	Fuel Tank Transfer Pump	6	Fuel Transfer Pump Relay Short To	Short To Ground in Fuel Transfer Pump	1601-F11
				Ground	Circuit
33	4011	Headlamp 1 High Beam	5	Left High Beam Open Circuit	Open in Left High Beam Circuit	1604-C
33	4011	Headlamp 1 High Beam	6	Left High Beam Short To Ground	Short To Ground or Overload in Left High	1604-C
					Beam Circuit
33	4012	Headlamp 2 High Beam	5	Right High Beam Open Circuit	Open in Right High Beam Circuit	1604-K
33	4012	Headlamp 2 High Beam	6	Right High Beam Short To Ground	Short To Ground or Overload in Right	1604-K
					High Beam Circuit
33	4014	High Current Auxiliary Load Switch 1	2	High Current Load Switch Error	Data erratic, intermittent or incorrect
33	4016	High Current Auxiliary Power Relay 1	5	High Current Load Under Current Or	Current below normal or open circuit	1601-E16
				Open Circuit
33	4016	High Current Auxiliary Power Relay 1	6	High Current Load Overcurrent	Current above normal or grounded circuit	1601-E16
33	4022	Lift Gate Power Control Enable	5	Lift Gate Enable Undercurrent	Current below normal or open circuit	1603-J
33	4022	Lift Gate Power Control Enable	6	Lift Gate Enable Overcurrent	Current above normal or grounded circuit	1603-J
33	4023	Lift Gate Power Control Switch	2	Lift Gate Switch Error	Data erratic, intermittent or incorrect
33	4024	Marker Light Interrupt Switch	2	Marker Light Interrupt Switch Failure	Data erratic, intermittent or incorrect

33	4026	Mirror Heat 2	5	Right Mirror Heat Undercurrent	Open in Right Mirror Heat Circuit		1603-L
33	4026	Mirror Heat 2	6	Right Mirror Heat Overcurrent	Short To Ground or Overload in Right		1603-L
					Mirror Heat Circuit
33	4028	Service Brake Circuit 1 Air Tank	5	Service Brake Circuit 1 Air Tank	Current below normal or open circuit
		Drain Valve		Drain Valve Solenoid Under Current
				Or Open Circuit
33	4028	Service Brake Circuit 1 Air Tank	6	Service Brake Circuit 1 Air Tank	Current above normal or grounded circuit
		Drain Valve		Drain Valve Solenoid Short To
				Ground
33	4029	Service Brake Circuit 1 Air Tank	2	Service Brake Circuit 1 Air Tank	Data erratic, intermittent or incorrect
		Drain Valve Switch		Drain Switch Error
33	4030	Service Brake Circuit 2 Air Tank	5	Service Brake Circuit 2 Air Tank	Current below normal or open circuit
		Drain Valve		Drain Valve Solenoid Under Current
				Or Open Circuit
33	4030	Service Brake Circuit 2 Air Tank	6	Service Brake Circuit 2 Air Tank	Current above normal or grounded circuit
		Drain Valve		Drain Valve Solenoid Short To
				Ground
33	4031	Service Brake Supply Air Tank Drain	5	Service Brake Supply Air Tank Drain	Current below normal or open circuit
		Valve		Valve Solenoid Under Current Or
				Open Circuit
33	4031	Service Brake Supply Air Tank Drain	6	Service Brake Supply Air Tank Drain	Current above normal or grounded circuit
		Valve		Valve Solenoid Short To Ground
33	4032	Service Brake Supply Air Tank Drain	2	Service Brake Supply Air Tank Drain	Data erratic, intermittent or incorrect
		Valve Switch		Valve Switch Error
33	4033	Sleeper Remote – Start/Stop Enable	5	Sleeper Control Enable Relay Under	Current below normal or open circuit
		Command		Current or Open Circuit
33	4033	Sleeper Remote – Start/Stop Enable	6	Sleeper Control Enable Relay Over	Short To Ground in Sleeper Control
		Command		Current	Enable Circuit
33	4038	Snow Plow Forward Lighting Relay 2	5	Right Plow Light Relay Under	Current below normal or open circuit		1601-F16
				Current Or Open Circuit
33	4038	Snow Plow Forward Lighting Relay 2	6	Right Plow Light Relay Circuit Short	Current above normal or grounded circuit		1601-F16
				To Ground
33	4039	Snow Plow Forward Lighting Relay 1	5	Left Plow Light Relay Circuit Under	Current below normal or open circuit		1601-F12
				Current Or Open Circuit
33	4039	Snow Plow Forward Lighting Relay 1	6	Left Plow Light Relay Circuit Short	Current above normal or grounded circuit		1601-F12
				To Ground
33	4040	Snow Plow Lighting Mode Switch	2	Snow Plow Switch Error	Data erratic, intermittent or incorrect
33	4041	Software Loop Time Exceeded	14	Software Loop Time Exceeded in the	Software Configuration Too Big
				Body Controller, Internal Fault
33	4042	Trailer Auxiliary Power Switch	2	Trailer Auxiliary Power Switch Error	Faulty Switch Actuator or Microswitch for
					Auxiliary Trailer Switch
33	4043	Transfer Case Front Driveline	5	Transfer Case Front Driveline	Current below normal or open circuit
		Actuator		Solenoid Under Current Or Open
				Circuit
33	4043	Transfer Case Front Driveline	6	Transfer Case Front Driveline	Current above normal or grounded circuit
		Actuator		Solenoid Short To Ground
33	4044	Transfer Case High Range Actuator	5	Transfer Case High Range Solenoid	Current below normal or open circuit
				Under Current Or Open Circuit

33	4044	Transfer Case High Range Actuator	6	Transfer Case High Range Solenoid	Current above normal or grounded circuit
				Short To Ground

33	4045	Transfer Case Low Range Actuator	5	Transfer Case Low Range Solenoid	Current below normal or open circuit
				Under Current Or Open Circuit

33	4045	Transfer Case Low Range Actuator	6	Transfer Case Low Range Solenoid	Current above normal or grounded circuit
				Short To Ground

33	4046	Transfer Case Neutral Actuator	5	Transfer Case Neutral Solenoid	Current below normal or open circuit
				Under Current Or Open Circuit

33	4046	Transfer Case Neutral Actuator	6	Transfer Case Neutral Solenoid	Current above normal or grounded circuit
				Short To Ground

33	4047	Transfer Case Output Shaft PTO	5	Transfer Case Output Shaft PTO	Current below normal or open circuit
		Actuator		Actuator Under Current Or Open
				Circuit
33	4047	Transfer Case Output Shaft PTO	6	Transfer Case Output Shaft PTO	Current above normal or grounded circuit
		Actuator		Actuator Over Current
33	4048	Transfer Case Range Switch	2	Transfer Case Range Switch Error	Data erratic, intermittent or incorrect
33	4049	Transfer Case Rear Driveline	5	Transfer Case Rear Driveline Relay	Current below normal or open circuit
		Actuator		Under Current Or Open Circuit
33	4049	Transfer Case Rear Driveline	6	Transfer Case Rear Driveline Relay	Current above normal or grounded circuit
		Actuator		Over Current
33	4053	Transmission Input Shaft PTO 2	5	Transmission Input Shaft PTO	Current below normal or open circuit	Not available	Not
		Actuator		Engagement Actuator Circuit Under			available
				Current Or Open Circuit

33	4053	Transmission Input Shaft PTO 2	6	Transmission Input Shaft PTO	Current above normal or grounded circuit	Not available	Not
		Actuator		Engagement Actuator Circuit			available
				Overcurrent

33	4055	Transmission Retarder Enable Switch	2	Transmission Retarder On/Off switch Failure	Data erratic, intermittent or incorrect
33	4056	Two Speed Axle Actuator	5	Two Speed Axle Solenoid Relay	Current below normal or open circuit
				Under Current Or Open Circuit
33	4056	Two Speed Axle Actuator	6	Two Speed Axle Solenoid Relay	Current above normal or grounded circuit
				Short To Ground
33	4057	Wiper Motor	5	Wiper Motor Undercurrent	Open in Wiper Motor Circuit	1604-A
33	4057	Wiper Motor	6	Wiper Motor Overcurrent	Short To Ground or Overload in Wiper	1604-A
					Motor Circuit
33	4058	Cab Dome Light 1 Switch	2	Cab Dome Light Switch is reporting	Faulty Switch Actuator or Microswitch for
				an error.	Cab Dome Light Switch
33	520461	Switch 6-Pack #1 Data Link	9	Switch 6-Pack #1 Data Link Comm.	Faulty Switch Pack #1 or Switch Data Link
				Failure
33	520462	Switch 6-Pack #2 Data Link	9	Switch 6-Pack #2 Data Link Comm.	Faulty Switch Pack #2 or Switch Data Link
				Failure
33	520463	Switch 6-Pack #3 Data Link	9	Switch 6-Pack #3 Data Link Comm.	Faulty Switch Pack #3 or Switch Data Link
				Failure

33	520464	Electrical Accessory Request	5	Electrical Accessory Request Relay Under Current Or Open Circuit	Open Circuit in Electrical Accessory Request Circuit
33 33	520464 520465	Electrical Accessory Request HVAC Control Head Multiple Motor	6 2	Electrical Accessory Request Relay Over Current HVAC control Head Multiple Motor	Short To Ground in Electrical Accessory Request Circuit HVAC Motor in Wrong Position or
33	520467	Faults Comm. Loss from BC to Power Pack	9	Faults DM1 Comm. fault from BC to PP3.	Jammed Private J1939 datalink problem (exceeded The Power Pack E Module has
33	520468	RPM 1 Channel 1 Cab Switch	2	RPM 1 Channel 1 Switch Error	bandwidth). stopped receiving heart beat message from the BC. Data erratic, intermittent or incorrect
33	520469	RPM 1 Channel 1 Overcurrent	6	RPM 1 Channel 1 Overcurrent	Current above normal or grounded circuit

33	520469	RPM 1 Channel 1 Overcurrent
33	520469	RPM 1 Channel 1 Overcurrent	19	Unavailable RPM 1 Channel 1 Analog Input	(PGN 65313 , Byte 3) indicates a value of FFh RPM 1 Channel 1 Analog Input Data
33	520470	RPM 1 Channel 2 Cab Switch	2	Invalid Data RPM 1 Channel 2 Switch Error	(PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520471	RPM 1 Channel 2 Overcurrent	6	RPM 1 Channel 2 Overcurrent	Current above normal or grounded circuit

33	520471	RPM 1 Channel 2 Overcurrent	14	RPM 1 Channel 2 Analog Input Data Unavailable	RPM 1 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value of FFh
33	520471	RPM 1 Channel 2 Overcurrent	19	RPM 1 Channel 2 Analog Input Invalid Data	RPM 1 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh
33 33	520472 520473	RPM 1 Channel 3 Cab Switch RPM 1 Channel 3 Overcurrent	2 6	RPM 1 Channel 3 Switch Error RPM 1 Channel 3 Overcurrent	Data erratic, intermittent or incorrect Current above normal or grounded circuit

33	520473	RPM 1 Channel 3 Overcurrent
33	520473	RPM 1 Channel 3 Overcurrent	19	Unavailable RPM 1 Channel 3 Analog Input	(PGN 65313 , Byte 5) indicates a value of FFh RPM 1 Channel 3 Analog Input Data
33	520474	RPM 1 Channel 4 Cab Switch	2	Invalid Data RPM 1 Channel 4 Switch Error	(PGN 65313 , Byte 5) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520475	RPM 1 Channel 4 Overcurrent	6	RPM 1 Channel 4 Overcurrent	Current above normal or grounded circuit
33	520475	RPM 1 Channel 4 Overcurrent	14	RPM 1 Channel 4 Analog Input Data	RPM 1 Channel 4 Analog Input Data
33	520475	RPM 1 Channel 4 Overcurrent	19	Unavailable RPM 1 Channel 4 Analog Input	(PGN 65313 , Byte 6) indicates a value of FFh RPM 1 Channel 4 Analog Input Data
33	520476	RPM 1 Channel 5 Cab Switch	2	Invalid Data RPM 1 Channel 5 Switch Error	(PGN 65313 , Byte 6) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520477	RPM 1 Channel 5 Overcurrent	6	RPM 1 Channel 5 Overcurrent	Current above normal or grounded circuit
33	520477	RPM 1 Channel 5 Overcurrent	14	RPM 1 Channel 5 Analog Input Data	RPM 1 Channel 5 Analog Input Data
33	520477	RPM 1 Channel 5 Overcurrent	19	Unavailable RPM 1 Channel 5 Analog Input	(PGN 65313 , Byte 7) indicates a value of FFh RPM 1 Channel 5 Analog Input Data
33	520478	RPM 1 Channel 6 Cab Switch	2	Invalid Data RPM 1 Channel 6 Switch Error	(PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520479	RPM 1 Channel 6 Overcurrent	6	RPM 1 Channel 6 Overcurrent	Current above normal or grounded circuit

33	520479	RPM 1 Channel 6 Overcurrent	14	RPM 1 Channel 6 Analog Input Data Unavailable	RPM 1 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value of FFh
33	520479	RPM 1 Channel 6 Overcurrent	19	RPM 1 Channel 6 Analog Input Invalid Data	RPM 1 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh
33 33	520480 520481	RPM 2 Channel 1 Cab Switch RPM 2 Channel 1 Overcurrent	2 6	RPM 2 Channel 1 Switch Error RPM 2 Channel 1 Overcurrent	Data erratic, intermittent or incorrect Current above normal or grounded circuit

33	520481	RPM 2 Channel 1 Overcurrent
33	520481	RPM 2 Channel 1 Overcurrent	19	Unavailable RPM 2 Channel 1 Analog Input	(PGN 65313 , Byte 3) indicates a value of FFh RPM 2 Channel 1 Analog Input Data
33	520482	RPM 2 Channel 2 Cab Switch	2	Invalid Data RPM 2 Channel 2 Switch Error	(PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520483	RPM 2 Channel 2 Overcurrent	6	RPM 2 Channel 2 Overcurrent	Current above normal or grounded circuit

33	520483	RPM 2 Channel 2 Overcurrent	14	RPM 2 Channel 2 Analog Input Data Unavailable	RPM 2 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value of FFh

33	520483	RPM 2 Channel 2 Overcurrent	19	RPM 2 Channel 2 Analog Input Invalid Data	RPM 2 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh
33	520484	RPM 2 Channel 3 Cab Switch	2	RPM 2 Channel 3 Switch Error	Data erratic, intermittent or incorrect
33	520485	RPM 2 Channel 3 Overcurrent	6	RPM 2 Channel 3 Overcurrent	Current above normal or grounded circuit

33	520485	RPM 2 Channel 3 Overcurrent	14	RPM 2 Channel 3 Analog Input Data Unavailable	RPM 2 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value of FFh
33	520485	RPM 2 Channel 3 Overcurrent	19	RPM 2 Channel 3 Analog Input Invalid Data	RPM 2 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value in the range of FCh to FEh
33	520486	RPM 2 Channel 4 Cab Switch	2	RPM 2 Channel 4 Switch Error	Data erratic, intermittent or incorrect
33	520487	RPM 2 Channel 4 Overcurrent	6	RPM 2 Channel 4 Overcurrent	Current above normal or grounded circuit

33	520487	RPM 2 Channel 4 Overcurrent	14	RPM 2 Channel 4 Analog Input Data Unavailable	RPM 2 Channel 4 Analog Input Data (PGN 65313 , Byte 6) indicates a value of FFh
33	520487	RPM 2 Channel 4 Overcurrent	19	RPM 2 Channel 4 Analog Input Invalid Data	RPM 2 Channel 4 Analog Input Data (PGN 65313 , Byte 6) indicates a value in the range of FCh to FEh
33	520488	RPM 2 Channel 5 Cab Switch	2	RPM 2 Channel 5 Switch Error	Data erratic, intermittent or incorrect
33	520489	RPM 2 Channel 5 Overcurrent	6	RPM 2 Channel 5 Overcurrent	Current above normal or grounded circuit

33	520489	RPM 2 Channel 5 Overcurrent	14	RPM 2 Channel 5 Analog Input Data Unavailable	RPM 2 Channel 5 Analog Input Data (PGN 65313 , Byte 7) indicates a value of FFh
33	520489	RPM 2 Channel 5 Overcurrent	19	RPM 2 Channel 5 Analog Input Invalid Data	RPM 2 Channel 5 Analog Input Data (PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh
33	520490	RPM 2 Channel 6 Cab Switch	2	RPM 2 Channel 6 Switch Error	Data erratic, intermittent or incorrect
33	520491	RPM 2 Channel 6 Overcurrent	6	RPM 2 Channel 6 Overcurrent	Current above normal or grounded circuit
33	520491	RPM 2 Channel 6 Overcurrent	14	RPM 2 Channel 6 Analog Input Data	RPM 2 Channel 6 Analog Input Data
33	520491	RPM 2 Channel 6 Overcurrent	19	Unavailable RPM 2 Channel 6 Analog Input	(PGN 65313 , Byte 8) indicates a value of FFh RPM 2 Channel 6 Analog Input Data
33	520504	RPM 4 Channel 1 Cab Switch	2	Invalid Data RPM 4 Channel 1 Switch Error	(PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520505	RPM 4 Channel 1 Overcurrent	6	RPM 4 Channel 1 Overcurrent	Current above normal or grounded circuit

33	520505	RPM 4 Channel 1 Overcurrent
33	520505	RPM 4 Channel 1 Overcurrent	19	Unavailable RPM 4 Channel 1 Analog Input	(PGN 65313 , Byte 3) indicates a value of FFh RPM 4 Channel 1 Analog Input Data
33	520506	RPM 4 Channel 2 Cab Switch	2	Invalid Data RPM 4 Channel 2 Switch Error	(PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520507	RPM 4 Channel 2 Overcurrent	6	RPM 4 Channel 2 Overcurrent	Current above normal or grounded circuit
33	520507	RPM 4 Channel 2 Overcurrent	14	RPM 4 Channel 2 Analog Input Data	RPM 4 Channel 2 Analog Input Data
33	520507	RPM 4 Channel 2 Overcurrent	19	Unavailable RPM 4 Channel 2 Analog Input	(PGN 65313 , Byte 4) indicates a value of FFh RPM 4 Channel 2 Analog Input Data
33	520508	RPM 4 Channel 3 Cab Switch	2	Invalid Data RPM 4 Channel 3 Switch Error	(PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520509	RPM 4 Channel 3 Overcurrent	6	RPM 4 Channel 3 Overcurrent	Current above normal or grounded circuit

33	520509	RPM 4 Channel 3 Overcurrent

33	520513	RPM 4 Channel 5 Overcurrent	14	RPM 4 Channel 5 Analog Input Data Unavailable	RPM 4 Channel 5 Analog Input Data (PGN 65313 , Byte 7) indicates a value of
33	520513	RPM 4 Channel 5 Overcurrent	19	RPM 4 Channel 5 Analog Input	FFh RPM 4 Channel 5 Analog Input Data
33	520514	RPM 4 Channel 6 Cab Switch	2	Invalid Data RPM 4 Channel 6 Switch Error	(PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520515	RPM 4 Channel 6 Overcurrent	6	RPM 4 Channel 6 Overcurrent	Current above normal or grounded circuit

33	520515	RPM 4 Channel 6 Overcurrent	14	RPM 4 Channel 6 Analog Input Data Unavailable	RPM 4 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value of FFh
33	520515	RPM 4 Channel 6 Overcurrent	19	RPM 4 Channel 6 Analog Input Invalid Data	RPM 4 Channel 6 Analog Input Data (PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh
33	520540	RPM 7 Channel 1 Cab Switch	2	RPM 7 Channel 1 Switch Error	Data erratic, intermittent or incorrect
33	520541	RPM 7 Channel 1 Overcurrent	6	RPM 7 Channel 1 Overcurrent	Current above normal or grounded circuit

33	520541	RPM 7 Channel 1 Overcurrent	14	RPM 7 Channel 1 Analog Input Data Unavailable	RPM 7 Channel 1 Analog Input Data (PGN 65313 , Byte 3) indicates a value of FFh
33	520541	RPM 7 Channel 1 Overcurrent	19	RPM 7 Channel 1 Analog Input Invalid Data	RPM 7 Channel 1 Analog Input Data (PGN 65313 , Byte 3) indicates a value in the range of FCh to FEh
33	520542	RPM 7 Channel 2 Cab Switch	2	RPM 7 Channel 2 Switch Error	Data erratic, intermittent or incorrect
33	520543	RPM 7 Channel 2 Overcurrent	6	RPM 7 Channel 2 Overcurrent	Current above normal or grounded circuit

33	520543	RPM 7 Channel 2 Overcurrent	14	RPM 7 Channel 2 Analog Input Data Unavailable	RPM 7 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value of FFh
33	520543	RPM 7 Channel 2 Overcurrent	19	RPM 7 Channel 2 Analog Input Invalid Data	RPM 7 Channel 2 Analog Input Data (PGN 65313 , Byte 4) indicates a value in the range of FCh to FEh
33	520544	RPM 7 Channel 3 Cab Switch	2	RPM 7 Channel 3 Switch Error	Data erratic, intermittent or incorrect
33	520545	RPM 7 Channel 3 Overcurrent	6	RPM 7 Channel 3 Overcurrent	Current above normal or grounded circuit

33	520545	RPM 7 Channel 3 Overcurrent	14	RPM 7 Channel 3 Analog Input Data Unavailable	RPM 7 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value of FFh
33	520545	RPM 7 Channel 3 Overcurrent	19	RPM 7 Channel 3 Analog Input Invalid Data	RPM 7 Channel 3 Analog Input Data (PGN 65313 , Byte 5) indicates a value in the range of FCh to FEh
33 33	520546 520547	RPM 7 Channel 4 Cab Switch RPM 7 Channel 4 Overcurrent	2 6	RPM 7 Channel 4 Switch Error RPM 7 Channel 4 Overcurrent	Data erratic, intermittent or incorrect Current above normal or grounded circuit

33	520547	RPM 7 Channel 4 Overcurrent
33	520547	RPM 7 Channel 4 Overcurrent	19	Unavailable RPM 7 Channel 4 Analog Input	(PGN 65313 , Byte 6) indicates a value of FFh RPM 7 Channel 4 Analog Input Data
33	520548	RPM 7 Channel 5 Cab Switch	2	Invalid Data RPM 7 Channel 5 Switch Error	(PGN 65313 , Byte 6) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520549	RPM 7 Channel 5 Overcurrent	6	RPM 7 Channel 5 Overcurrent	Current above normal or grounded circuit
33	520549	RPM 7 Channel 5 Overcurrent	14	RPM 7 Channel 5 Analog Input Data	RPM 7 Channel 5 Analog Input Data
33	520549	RPM 7 Channel 5 Overcurrent	19	Unavailable RPM 7 Channel 5 Analog Input	(PGN 65313 , Byte 7) indicates a value of FFh RPM 7 Channel 5 Analog Input Data
33	520550	RPM 7 Channel 6 Cab Switch	2	Invalid Data RPM 7 Channel 6 Switch Error	(PGN 65313 , Byte 7) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520551	RPM 7 Channel 6 Overcurrent	6	RPM 7 Channel 6 Overcurrent	Current above normal or grounded circuit

33	520551	RPM 7 Channel 6 Overcurrent
33	520551	RPM 7 Channel 6 Overcurrent	19	Unavailable RPM 7 Channel 6 Analog Input	(PGN 65313 , Byte 8) indicates a value of FFh RPM 7 Channel 6 Analog Input Data
33	520552	TEM Aux 1 Int Switch	2	Invalid Data TEM Aux 1 Int Switch Error	(PGN 65313 , Byte 8) indicates a value in the range of FCh to FEh Data erratic, intermittent or incorrect
33	520553	TEM Aux 1 Switch	2	TEM Aux 1 Switch Error	Data erratic, intermittent or incorrect
33 33	520554 520555	TEM Aux 1 With Interlocks Switch TEM Aux 10 Switch	2 2	TEM Aux 1 With Interlocks Switch Error TEM Aux 10 Switch Error	Data erratic, intermittent or incorrect Data erratic, intermittent or incorrect
33	520556	TEM Aux 11 Switch	2	TEM Aux 11 Switch Error	Data erratic, intermittent or incorrect
33	520557	TEM Aux 12 Switch	2	TEM Aux 12 Switch Error	Data erratic, intermittent or incorrect
33	520558	TEM Aux 13 Switch	2	TEM Aux 13 Switch Error	Data erratic, intermittent or incorrect
33	520559	TEM Aux 14 Switch	2	TEM Aux 14 Switch Error	Data erratic, intermittent or incorrect

33	520560	TEM Aux 15 Switch	2	TEM Aux 16 Switch Error	Data erratic, intermittent or incorrect
33	520561	TEM Aux 16 Switch	2	TEM Aux 16 Switch Error	Data erratic, intermittent or incorrect
33	520562	TEM Aux 17 Switch	2	TEM Aux 17 Switch Error	Data erratic, intermittent or incorrect
33	520563	TEM Aux 18 Switch	2	TEM Aux 18 Switch Error	Data erratic, intermittent or incorrect
33	520564	TEM Aux 2 Int Switch	2	TEM Aux 2 Int Switch Error	Data erratic, intermittent or incorrect
33	520565	TEM Aux 2 Switch	2	TEM Aux 2 Switch Error	Data erratic, intermittent or incorrect
33 33	520566 520567	TEM Aux 2 With Interlocks Switch TEM Aux 3 Int Switch	2 2	TEM Aux 2 With Interlocks Switch Error TEM Aux 3 Int Switch Error	Data erratic, intermittent or incorrect Data erratic, intermittent or incorrect
33	520568	TEM Aux 3 Switch	2	TEM Aux 3 Switch Error	Data erratic, intermittent or incorrect
33 33	520569 520570	TEM Aux 3 With Interlocks Switch TEM Aux 4 Switch	2 2	TEM Aux 3 With Interlocks Switch Error TEM Aux 4 Switch Error	Data erratic, intermittent or incorrect Data erratic, intermittent or incorrect
33 33	520571 520572	TEM Aux 4 With Interlocks Switch TEM Aux 5 Switch	2 2	TEM Aux 4 With Interlocks Switch Error TEM Aux 5 Switch Error	Data erratic, intermittent or incorrect Data erratic, intermittent or incorrect
33	520573	TEM Aux 6 Switch	2	TEM Aux 6 Switch Error	Data erratic, intermittent or incorrect
33	520574	TEM Aux 7 Switch	2	TEM Aux 7 Switch Error	Data erratic, intermittent or incorrect
33	520575	TEM Aux 8 Switch	2	TEM Aux 8 Switch Error	Data erratic, intermittent or incorrect
33	520576	TEM Aux 9 Switch	2	TEM Aux 9 Switch Error	Data erratic, intermittent or incorrect
33	520577	TEM Aux Solenoid 1	5	TEM Aux Solenoid 1 Under Current Or Open Circuit	Current below normal or open circuit
33	520577	TEM Aux Solenoid 1	6	TEM Aux Solenoid 1 Overcurrent	Current above normal or grounded circuit
33 33	520578 520579	TEM Aux Solenoid 1 Switch TEM Aux Solenoid 2	2 5	TEM Aux Solenoid 1 Switch Error TEM Aux Solenoid 2 Under Current	Data erratic, intermittent or incorrect Current below normal or open circuit
				Or Open Circuit
33	520579	TEM Aux Solenoid 2	6	TEM Aux Solenoid 2 Overcurrent	Current above normal or grounded circuit
33 33	520580 520581	TEM Aux Solenoid 2 Switch TEM Aux Solenoid 3	2 5	TEM Aux Solenoid 2 Switch Error TEM Aux Solenoid 3 Under Current	Data erratic, intermittent or incorrect Current below normal or open circuit
				Or Open Circuit
33	520581	TEM Aux Solenoid 3	6	TEM Aux Solenoid 3 Overcurrent	Current above normal or grounded circuit
33 33	520582 520583	TEM Aux Solenoid 3 Switch TEM Aux Solenoid 4	2 5	TEM Aux Solenoid 3 Switch Error TEM Aux Solenoid 4 Under Current	Data erratic, intermittent or incorrect Current below normal or open circuit
				Or Open Circuit
33	520583	TEM Aux Solenoid 4	6	TEM Aux Solenoid 4 Overcurrent	Current above normal or grounded circuit
33 33	520584 520585	TEM Aux Solenoid 4 Switch TEM Aux Solenoid 5	2 5	TEM Aux Solenoid 4 Switch Error TEM Aux Solenoid 5 Under Current	Data erratic, intermittent or incorrect Current below normal or open circuit
33	520585	TEM Aux Solenoid 5	6	Or Open Circuit TEM Aux Solenoid 5 Overcurrent	Current above normal or grounded circuit
33	520586	TEM Aux Solenoid 5 Switch	2	TEM Aux Solenoid 5 Switch Error	Data erratic, intermittent or incorrect
33	520587	TEM Aux Solenoid 6	5	TEM Aux Solenoid 6 Under Current	Current below normal or open circuit
33	520587	TEM Aux Solenoid 6	6	Or Open Circuit TEM Aux Solenoid 6 Overcurrent	Current above normal or grounded circuit
33	520588	TEM Aux Solenoid 6 Switch	2	TEM Aux Solenoid 6 Switch Error	Data erratic, intermittent or incorrect
33	520589	TEM Dual 1 Switch	2	TEM Dual 1 Switch Error	Data erratic, intermittent or incorrect
33 33	520590 520591	Data Link – Switch 12 Pack top Data Link – Switch 12 Pack bottom	9 9	Switch 12-Pack Top Data Link Comm. Failure Switch 12-Pack Bottom Data Link	Abnormal update rate Abnormal update rate
33	520604	5V Sensor Supply		Comm. Failure 5V Sensor Supply Above Normal	Data valid but above normal operational
33	520604	5V Sensor Supply	1	Range 5V Sensor Supply Below Normal	range – most severe level Data valid but below normal operational
33	520605	EGC Gauge Calibration	13	Range Electronic Gauge Cluster checksum	range – most severe level Defective EGC
33	520606	AGSP Gauge Calibration	13	error. AGSP checksum error.	Defective AGSP
33	520607	SIC Gauge Calibration	13	SIC checksum error.	Defective SIC
33 33	520644 520644	PPE3 AC Module Input Voltage PPE3 AC Module Input Voltage	3 4	AC Module Overvoltage condition on High Voltage DC Bus. AC Module Undervoltage condition	An Over Voltage Condition in the AC module (Inverter High Voltage Bus). An Under Voltage Condition in the AC	A high Battery Cutout fault has occurred and the source of the fault is the AC module (inverter high voltage bus). A low Battery Cutout fault has
33	520649	Air Horn Solenoid Command	5	on High Voltage DC Bus. Air Horn Undercurrent	module (Inverter High Voltage Bus). Open in Air Horn Circuit	occurred and the source of the fault is the AC module (inverter high voltage bus).
33 33	520649 520650	Air Horn Solenoid Command Air Horn Switch / Headlight Interrupt	6	Air Horn Overcurrent Headlight Interrupt, Marker Interrupt	Short To Ground or Overload in Air Horn Circuit AMH Request Circuit Open or Shorted		1600-B1
33	520650	Switch Air Horn Switch / Headlight Interrupt	1	and Air Horn Switch reading above normal range Headlight Interrupt, Marker Interrupt	High Short To Ground in AMH Request Circuit		1600-B1
		Switch		and Air Horn Switch reading below normal range

33 33	520651 520652	Air Shield Lights Command Auxiliary High Current Load Relay	6 5
		Command
33	520652	Auxiliary High Current Load Relay	6
33	520653	Command Auxiliary High Current Load Switch	2
33 33	520654 520654	Auxiliary Transmission Constant Supply Air Solenoid Command Auxiliary Transmission Constant	5 6
33	520655	Supply Air Solenoid Command Auxiliary Transmission High Range	5
33	520655	Air Solenoid Command Auxiliary Transmission High Range	6
33	520656	Air Solenoid Command Auxiliary Transmission Neutral Air	5
33	520656	Solenoid Command Auxiliary Transmission Neutral Air	6
33	520657	Solenoid Command Auxiliary Transmission Range Switch	2
33	520658	Body Equipment Hydraulic Power	5
33	520658	Auxiliary Pump Inhibit Command Body Equipment Hydraulic Power	6
33	520659	Auxiliary Pump Inhibit Command Bus Amber Signal Light 1 Command	5
33	520659	Bus Amber Signal Light 1 Command	6
33 33	520660 520660	Bus Amber Signal Light 2 Command Bus Amber Signal Light 2 Command	5 6
33	520661	Bus Amber Signal Light 3 Command	5
33	520661	Bus Amber Signal Light 3 Command	6
33	520662	Bus Amber Signal Light 4 Command	5
33	520662	Bus Amber Signal Light 4 Command	6
33	520663	Bus Red Signal Light 4 Command	5
33	520663	Bus Red Signal Light 4 Command	6
33	520664	Bus Crossing Gate Command	5
33	520664	Bus Crossing Gate Command	6
33 33	520665 520665	Bus Passenger Door Close Relay Command Bus Passenger Door Close Relay	5 6
33	520667	Command Bus Passenger Door Control Switch
		2
33	520667	Bus Passenger Door Control Switch 2	1
33 33	520668 520668	Bus Passenger Door Open Relay Command Bus Passenger Door Open Relay	5 6
33	520669	Command Bus Red Signal Light 1 Command	5
33	520669	Bus Red Signal Light 1 Command	6
33	520670	Bus Red Signal Light 2 Command	5
33	520670	Bus Red Signal Light 2 Command	6
33	520671	Bus Red Signal Light 3 Command	5
33	520671	Bus Red Signal Light 3 Command	6
33	520672	Bus Stop Arm Command	5
33	520672	Bus Stop Arm Command	6
33	520673	Cab Dome Light 1 Command	5
33	520673	Cab Dome Light 1 Command	6
33	520674	Cab Dome Light 1 Switch	2
33	520675	Cab Dome Light 2 Command	5
33	520675	Cab Dome Light 2 Command	6
33	520676	Cab Dome Light 2 Switch	2

33	520677	Cab Floor Light Command	5
33	520677	Cab Floor Light Command	6
33	520678	Cab Window Motor 1 Status	7

33 33	520679 520680	Cab Window Motor 2 Status Cab Window Motor 3 Status	7 7	Passenger Window Motor Failure Rear Driver Window Motor Failure	Passenger Door Pod Module Window Motor Has Short or Open or Window is Jammed Rear Driver Door Pod Module Window
33	520681	Cab Window Motor 4 Status	7	Rear Passenger Window Motor	Motor Has Short or Open or Window is Jammed Rear Passenger Door Pod Module
33	520682	Compression Brake Switch Indicator	5	Failure Compression Brake Indicator output	Window Motor Has Short or Open or Window is Jammed Current below normal or open circuit
		Lamp Command		is Under Current Or Open Circuit
33 33	520682 520683	Compression Brake Switch Indicator Lamp Command Door Control Module 1 Status	6 7	Compression Brake Indicator is over current Driver Door Pod Module Failure	Current above normal or grounded circuit Defective Driver Door Pod Module
33	520684	Door Control Module 2 Status	7	Passenger Door Pod Module Failure	Defective Passenger Door Pod Module
33	520685	Door Control Module 3 Status	7	Rear Driver Door Pod Module Failure	Defective Rear Driver Door Pod Module
33	520686	Door Control Module 4 Status	7	Rear Passenger Door Pod Module	Defective Rear Passenger Door Pod
33	520687	Engine Remote Start Command	5	Failure Remote Start Relay Under Current	Module Open Circuit in Remote Bunk Start Circuit
33	520687	Engine Remote Start Command	6	Or Open Circuit Remote Start Relay Over Current	Short To Ground in Remote Bunk Start
33	520688	Engine Remote Stop Command	5	Remote Stop Relay Under Current	Circuit Open Circuit in Remote Bunk Stop Circuit
33	520688	Engine Remote Stop Command	6	Or Open Circuit Remote Stop Relay Over Current	Short To Ground in Remote Bunk Stop
33	520689	Exterior Lamp Check Switch	2	Exterior Lamp Check Switch Error	Circuit Data erratic, intermittent or incorrect
33 33	520690 520691	Fifth Wheel Slide Latch Solenoid Command Fog Light 2 Command	2 5	Fifth Wheel Slide Switch Error Right Fog Light Undercurrent	Faulty Switch Actuator or Microswitch for Fifth Wheel Slide Switch Open in Right Fog Light Circuit
33 33	520691 520692	Fog Light 2 Command Fuel Transfer Pump Command	6 5	Right Fog Light Overcurrent Fuel Transfer Pump Relay Under	Short To Ground or Overload in Right Fog Light Output Circuit Open Circuit in Fuel Transfer Pump
33	520692	Fuel Transfer Pump Command	6	Current Or Open Circuit Fuel Transfer Pump Relay Short To	Circuit Short To Ground or Overload in Fuel
33	520693	Headlamp High Beam Command 1	5	Ground Left High Beam Open Circuit	Transfer Pump Circuit Open in Left High Beam Circuit
33 33	520693 520694	Headlamp High Beam Command 1 Headlamp High Beam Command 2	6 5	Left High Beam Short To Ground Right High Beam Open Circuit	Short To Ground or Overload in Left High Beam Circuit Open in Right High Beam Circuit
33 33	520694 520695	Headlamp High Beam Command 2 HVAC Mode Control Actuator	6 2	Right High Beam Short To Ground HVAC Control Head Mode Fault	Short To Ground or Overload in Right High Beam Circuit HVAC Motor in Wrong Position or
33	520696	HVAC Recirculation Door Control	2	DM1 HVAC Control Head Air Inlet DM1	Jammed HVAC Motor in Wrong Position or
33	520697	Actuator HVAC System Controller	9	HVAC Control Head Circuit Failed To	Jammed Abnormal update rate
33	520698	Ignition Signal	2	Communicate With The BC Key State Ignition Signal Error	Open in Ignition Signal Input Circuit To BC
33 33	520703 520703	Lift Gate Power Control Enable Command Lift Gate Power Control Enable	5 6	Lift Gate Enable Undercurrent Lift Gate Enable Overcurrent	Current below normal or open circuit Current above normal or grounded circuit
33	520704	Command Lift Gate Power Control Switch	2	Lift Gate Switch Error	Data erratic, intermittent or incorrect
33 33	520705 520705	Load Shed OFF Command Load Shed OFF Command	5 6	Load Shed OFF Relay Under Current Or Open Circuit Load Shed OFF Relay Over Current	Open Circuit in Load Shed OFF Circuit Short To Ground in Load Shed OFF
33	520706	Load Shed ON Command	5	Load Shed ON Relay Under Current	Circuit Open Circuit in Load Shed ON Circuit
33	520706	Load Shed ON Command	6	Or Open Circuit Load Shed ON Relay Over Current	Short To Ground in Load Shed ON Circuit
33 33	520707 520708	Loop Time Exceeded Marker Interrupt Switch	14 2	BC Internal Fault, Main Loop Time Exceeded Marker Interrupt Switch Failure	Software Configuration Too Big Data erratic, intermittent or incorrect
33	520709	Mirror Heat 2 Command	5	Right Mirror Heat Undercurrent	Open in Right Mirror Heat Circuit
33 33	520709 520711	Mirror Heat 2 Command Primary Air Tank Drain Valve	6 5	Right Mirror Heat Overcurrent Humphrey Valve Primary Tank	Short To Ground or Overload in Right Mirror Heat Circuit Current below normal or open circuit
33	520711	Actuator Command Primary Air Tank Drain Valve	6	Solenoid Under Current Or Open Circuit Humphrey Valve Primary Tank	Current above normal or grounded circuit
33	520712	Actuator Command Primary Tank Drain Valve Switch	2	Solenoid Short To Ground Humphrey Valve Primary Tank	Data erratic, intermittent or incorrect
33	520713	Rear HVAC Blower Speed Control	2	Switch Error Rear HVAC Blower Speed Control	Faulty Switch Actuator or Microswitch for
		Switch		Switch Error	Rear HVAC Blower Speed Control Switch
33	520714	Rear HVAC Temperature Control Switch	2	Rear HVAC Temperature Control Switch Error	Faulty Switch Actuator or Microswitch for Rear HVAC Temperature Control Switch
33 33	520715 520715	Secondary Tank Drain Valve Actuator Command Secondary Tank Drain Valve	5 6	Humphrey Valve Secondary Tank Solenoid Under Current Or Open Circuit Humphrey Valve Secondary Tank	Current below normal or open circuit Current above normal or grounded circuit
33	520716	Actuator Command Secondary Tank Drain Valve Switch	2	Solenoid Short To Ground Humphrey Valve Secondary Tank	Data erratic, intermittent or incorrect
33	520720	Snow Plow Light Left Forward	5	Switch Error Left Plow Light Relay Under Current	Current below normal or open circuit
33	520720	Lighting Relay Command Snow Plow Light Left Forward	6	Or Open Circuit Left Plow Light Relay Circuit Short	Current above normal or grounded circuit
33	520721	Lighting Relay Command Snow Plow Light Right Forward	5	To Ground Right Plow Light Relay Under	Current below normal or open circuit
33	520721	Lighting Relay Command Snow Plow Light Right Forward	6	Current Or Open Circuit Right Plow Light Relay Circuit Short	Current above normal or grounded circuit
		Lighting Relay Command		To Ground

33	520722	Snow Plow Lighting Mode Switch 2		Snow Plow Switch Error	Data erratic, intermittent or incorrect
33	520725	Supply Air Tank Drain Valve Actuator 5 Command		Humphrey Valve Wet Tank Solenoid Under Current Or Open Circuit	Current below normal or open circuit
33 33	520725 520726	Supply Air Tank Drain Valve Actuator 6 Command Supply Air Tank Drain Valve Switch 2		Humphrey Valve Wet Tank Solenoid Short To Ground Humphrey Valve Wet Tank Switch	Current above normal or grounded circuit Data erratic, intermittent or incorrect
33	520727	Trailer Auxiliary Power Switch 2		Error Auxiliary Switch Error	Faulty Switch Actuator or Micro switch for
33	520728	Trailer Left Turn Light Relay 5		Trailer Left Turn Lamp Relay Under	Auxiliary Trailer Switch Open Circuit in Trailer Left Turn Lamp
33	520728	Command Trailer Left Turn Light Relay 6		Current Or Open Circuit Trailer Left Turn Lamp Relay Over	Circuit Short To Ground in Trailer Left Turn
33	520729	Command Trailer License Plate Light Relay 5		Current Trailer License Plate Lamp Relay	Lamp Circuit Open Circuit in Trailer License Plate
33	520729	Command Trailer License Plate Light Relay 6		Under Current Or Open Circuit Trailer License Plate Lamp Relay	Lamp Circuit Short To Ground in Trailer License Plate
33	520730	Command Trailer Marker Light Relay Command 5		Over Current Trailer Marker Lamp Relay Under	Lamp Circuit Open Circuit in Trailer Marker Lamp
33	520730	Trailer Marker Light Relay Command 6		Current Or Open Circuit Trailer Marker Lamp Relay Over	Circuit Short To Ground in Trailer Marker Lamp
33	520731	Trailer Right Turn Light Relay 5		Current Trailer Right Turn Lamp Relay Under	Circuit Open Circuit in Trailer Right Turn Lamp
33	520731	Command Trailer Right Turn Light Relay 6		Current Or Open Circuit Trailer Right Turn Lamp Relay Over	Circuit Short To Ground in Trailer Right Turn
33	520732	Command Trailer Stop Light Relay Command 5		Current Trailer Stop Lamp Relay Under	Lamp Circuit Open Circuit in Trailer Stop Lamp Circuit
33	520732	Trailer Stop Light Relay Command 6		Current Or Open Circuit Trailer Stop Lamp Relay Over	Short To Ground in Trailer Stop Lamp
33	520733	Transfer Case Blower Switch 2		Current Transfer Case Switch Error	Circuit Data erratic, intermittent or incorrect
33	520734	Transfer Case Front Driveline 5		Transfer Case Solenoid D Under	Current below normal or open circuit
33	520734	Solenoid Command Transfer Case Front Driveline 6		Current Or Open Circuit Transfer Case Solenoid D Short To	Current above normal or grounded circuit
33	520735	Solenoid Command Transfer Case High Range Solenoid 5		Ground Transfer Case Solenoid C Under	Current below normal or open circuit
33	520735	Command Transfer Case High Range Solenoid 6		Current Or Open Circuit Transfer Case Solenoid C Short To	Current above normal or grounded circuit
33	520736	Command Transfer Case Low Range Solenoid 5		Ground Transfer Case Solenoid A Under	Current below normal or open circuit
33	520736	Command Transfer Case Low Range Solenoid 6		Current Or Open Circuit Transfer Case Solenoid A Short To	Current above normal or grounded circuit
33	520737	Command Transfer Case Neutral Solenoid 5		Ground Transfer Case Solenoid B Under	Current below normal or open circuit
33	520737	Command Transfer Case Neutral Solenoid 6		Current Or Open Circuit Transfer Case Solenoid B Short To	Current above normal or grounded circuit
33	520738	Command Transfer Case PTO Solenoid 5		Ground Air Solenoid B Packs Relay Under	Current below normal or open circuit
33	520738	Command Transfer Case PTO Solenoid 6		Current Or Open Circuit Air Solenoid B Packs Relay Over	Current above normal or grounded circuit
33	520739	Command Transfer Case PTO Solenoid Relay 5		Current Transfer Case PTO Solenoid Under	Current below normal or open circuit
33	520739	Command Transfer Case PTO Solenoid Relay 6		Current Or Open Circuit Transfer Case PTO Solenoid Short	Current above normal or grounded circuit
33	520740	Command Transfer Case PTO Switch 2		To Ground Transfer Case PTO Switch Error	Data erratic, intermittent or incorrect
33	520741	Transfer Case Range Switch 2		Transfer Case Switch Error	Data erratic, intermittent or incorrect
33 33	520742 520742	Transfer Case Rear Driveline 5 Solenoid Command Transfer Case Rear Driveline 6		Air Solenoid A Packs Relay Under Current Or Open Circuit Air Solenoid A Packs Relay Over	Current below normal or open circuit Current above normal or grounded circuit
33	520743	Solenoid Command Transmission PTO Engagement 5		Current TEM PTO Engagement Relay Under	Current below normal or open circuit
33	520743	Actuator Command Transmission PTO Engagement 6		Current Or Open Circuit TEM PTO Engagement Relay	Current above normal or grounded circuit
33	520744	Actuator Command Transmission PTO Retention 5		Overcurrent TEM PTO Retaining Solenoid	Current below normal or open circuit
33	520744	Actuator Command Transmission PTO Retention 6		Undercurrent TEM PTO Retaining Solenoid	Current above normal or grounded circuit
33	520745	Actuator Command Transmission PTO Switch 2		Overcurrent TEM PTO Engagement Switch Error	Data erratic, intermittent or incorrect
33	520746	Transmission Retarder Enable 2		Transmission Retarder On/Off switch	Data erratic, intermittent or incorrect
33	520747	Switch Two Speed Axle Actuator 5		Failure Two Speed Axle Solenoid Relay	Current below normal or open circuit
33	520747	Two Speed Axle Actuator 6		Under Current Or Open Circuit Two Speed Axle Solenoid Relay	Current above normal or grounded circuit
33	520748	Wiper Motor Power 5		Short To Ground Wiper Motor Undercurrent	Open in Wiper Motor Circuit
33 33	520748 520749	Wiper Motor Power 6 Mirror Heater 2		Wiper Motor Overcurrent Mirror Heat Switch Error	Short To Ground or Overload in Wiper Motor Circuit Faulty Switch Actuator or Microswitch for
33	520750	Fog Lights Left Command 5		Left Fog Light Undercurrent	Mirror Heat Switch Open in Left Fog Light Circuit
33 33	520750 520751	Fog Lights Left Command 6 ICON Freedomline Gear Indicator 5		Left Fog Light Overcurrent ICON Freedomline Gear Indicator	Short To Ground or Overload in Left Fog Light Circuit Open Circuit in ICON Freedomline Gear	1601-F9
33	520751	ICON Freedomline Gear Indicator 6		Relay Under Current ICON Freedomline Gear Indicator	Indicator Circuit Short To Ground in ICON Freedomline	1601-F9
33	520752	Electrical Accessory Power Switch 2		Relay Over Current Electrical Accessory Power Switch	Gear Indicator Circuit Faulty Switch Actuator or Microswitch for
33	520753	Transmission Economy Mode Switch 2		Error Transmission Economy Mode Switch	Electrical Accessory Power Switch Faulty Switch Actuator or Microswitch for
				Error	Transmission Economy Mode Switch
33 33	520754 520754	Universal Air Solenoid Relay Driver 2 5 Universal Air Solenoid Relay Driver 2 Open Circuit or Defective Solenoid Under Current Or Open Circuit Universal Air Solenoid Relay Driver 2 6 Universal Air Solenoid Relay Driver 2 Short To Ground or Defective Solenoid
33	520755	Over Current Universal Air Solenoid Relay Driver 3 5 Universal Air Solenoid Relay Driver 3 Open Circuit or Defective Solenoid
			Under Current Or Open Circuit

33	520755	Universal Air Solenoid Relay Driver 3	6	Universal Air Solenoid Relay Driver 3	Short To Ground or Defective Solenoid
				Over Current
33	520756	Universal Air Solenoid Relay Driver 4	5	Universal Air Solenoid Relay Driver 4	Open Circuit or Defective Solenoid
				Under Current Or Open Circuit
33	520756	Universal Air Solenoid Relay Driver 4	6	Universal Air Solenoid Relay Driver 4	Short To Ground or Defective Solenoid
				Over Current
33	520757	Universal Air Solenoid Relay Driver 5	5	Universal Air Solenoid Relay Driver 5	Open Circuit or Defective Solenoid
				Under Current Or Open Circuit
33	520757	Universal Air Solenoid Relay Driver 5	6	Universal Air Solenoid Relay Driver 5	Short To Ground or Defective Solenoid
				Over Current
33	520758	Universal Air Solenoid Relay Driver 6	5	Universal Air Solenoid Relay Driver 6	Open Circuit or Defective Solenoid
				Under Current Or Open Circuit
33	520758	Universal Air Solenoid Relay Driver 6	6	Universal Air Solenoid Relay Driver 6	Short To Ground or Defective Solenoid
				Over Current
33	520759	Universal Air Solenoid Relay Driver 7	5	Universal Air Solenoid Relay Driver 7	Open Circuit or Defective Solenoid
				Under Current Or Open Circuit
33	520759	Universal Air Solenoid Relay Driver 7	6	Universal Air Solenoid Relay Driver 7	Short To Ground or Defective Solenoid
				Over Current
33	520760	Universal Air Solenoid Relay Driver 8	5	Universal Air Solenoid Relay Driver 8	Open Circuit or Defective Solenoid
				Under Current Or Open Circuit
33	520760	Universal Air Solenoid Relay Driver 8	6	Universal Air Solenoid Relay Driver 8	Short To Ground or Defective Solenoid
				Over Current
33	520761	Universal Air Solenoid Relay Driver 9	5	Universal Air Solenoid Relay Driver 9	Open Circuit or Defective Solenoid
				Under Current Or Open Circuit
33	520761	Universal Air Solenoid Relay Driver 9	6	Universal Air Solenoid Relay Driver 9	Short To Ground or Defective Solenoid
				Over Current
33	520762	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		10		10 Under Current Or Open Circuit
33	520762	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		10		10 Over Current
33	520763	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		11		11 Under Current Or Open Circuit
33	520763	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		11		11 Over Current
33	520764	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		12		12 Under Current Or Open Circuit
33	520764	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		12		12 Over Current
33	520765	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		13		13 or Spare Relay Driver 4 Under
				Current Or Open Circuit
33	520765	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		13		13 or Spare Relay Driver 4 Over
				Current
33	520766	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		14		14 or Spare Relay Driver 3 Under
				Current Or Open Circuit
33	520766	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		14		14 or Spare Relay Driver 3 Over
				Current
33	520767	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		15		15 Under Current Or Open Circuit
33	520767	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		15		15 Over Current
33	520768	Universal Air Solenoid Relay Driver	5	Universal Air Solenoid Relay Driver	Open Circuit or Defective Solenoid
		16		16 Under Current Or Open Circuit
33	520768	Universal Air Solenoid Relay Driver	6	Universal Air Solenoid Relay Driver	Short To Ground or Defective Solenoid
		16		16 Over Current
33	520769	BUS Spare Relay Driver One	5	Spare Relay Driver One Under	Open Circuit
				Current Or Open Circuit
33	520769	BUS Spare Relay Driver One	6	Spare Relay Driver One Over	Short To Ground
				Current
33	520770	BUS Spare Relay Driver Two	5	Spare Relay Driver Two Under	Open Circuit
				Current Or Open Circuit
33	520770	BUS Spare Relay Driver Two	6	Spare Relay Driver Two Over	Short To Ground
				Current
33	520771	PPE3 AC Module Output Current	6	AC Module has shutdown due to	A Surge may have occurred for a while in An Overload condition has been
				overload condition.	the Vehicle AC bus for a long time (The detected in the AC module and the
					inverter supplies additional current to the Vehicle AC bus is shutdown.
					load).
33	520772	PPE3 Fuse Open	31	PPE3 Fuse Open.	Load exceeded rating. PPE3 module Fuse is Open.
33	520773	PPE3 AC Module Temperature	0	AC module over temperature	An overcurrent condition in the Vehicle AC An Over temperature fault has
				condition.	Bus might have caused an over occurred and the source of the fault
					temperature. is the AC module (inverter high
					voltage bus).
33	520774	PPE3 DC Module Temperature	0	DC module over temperature	An overcurrent condition in the Vehicle DC An Over Temperature fault has
				condition.	Bus might have caused an over occurred and the source of the fault
					temperature. is the DC regulator (Vehicle Battery
					Bus).
33	520775	Anti Theft Ignition Relay	5	Anti Theft Ignition Relay Under	Open circuit in Anti Theft Ignition Circuit	1601-E4
				Current Or Open Circuit
33	520775	Anti Theft Ignition Relay	6	Anti Theft Ignition Relay over current	Short to Ground in Anti Theft Ignition	1601-E4
					Circuit
33	520776	Anti Theft Engine Stop Switch	2	Anti Theft Engine Stop Switch Error	Faulty Switch Actuator or Microswitch for
					Anti Theft Engine Stop Switch
33	520777	Anti Theft Switch 0	2	Anti Theft Switch 0 Error	Faulty Switch Actuator or Microswitch for
					Anti Theft Switch 0
33	520778	Anti Theft Switch 1	2	Anti Theft Switch 1 Error	Faulty Switch Actuator or Microswitch for
					Anti Theft Switch 1
33	520779	Anti Theft Switch 2	2	Anti Theft Switch 2 Error	Faulty Switch Actuator or Microswitch for
					Anti Theft Switch 2
33	520780	Anti Theft Switch 3	2	Anti Theft Switch 3 Error	Faulty Switch Actuator or Microswitch for
					Anti Theft Switch 3
33	520781	Anti Theft Switch 4	2	Anti Theft Switch 4 Error	Faulty Switch Actuator or Microswitch for
					Anti Theft Switch 4
33	520788	TEG Aux Relay Driver 1	5	TEG Aux Relay Driver Output 1	Current below normal or open circuit	1601-E16
				Under Current Or Open Circuit
33	520788	TEG Aux Relay Driver 1	6	TEG Aux Relay Driver Output 1	Current above normal or grounded circuit	1601-E16
				Overcurrent
33	520799	TEG Aux Relay Driver 2	5	TEG Aux Relay Driver Output 2	Current below normal or open circuit	1601-E12
				Under Current Or Open Circuit
33	520799	TEG Aux Relay Driver 2	6	TEG Aux Relay Driver Output 2	Current above normal or grounded circuit	1601-E12
				Overcurrent

33 33	520800 520800	Transmission Economy Mode output Transmission Economy Mode output	5 6	Transmission Economy Mode Relay Driver Output Under Current Or Open Circuit Transmission Economy Mode Relay	Current below normal or open circuit Current above normal or grounded circuit		1601-F11 1601-F11
33	520801	Transmission Auto Neutral Output	5	Driver Output Overcurrent Transmission Auto Neutral Relay	Current below normal or open circuit		1601-E3
33	520801	Transmission Auto Neutral Output	6	Driver Output Under Current Or Open Circuit Transmission Auto Neutral Relay	Current above normal or grounded circuit		1601-E3
33	520802	Aux Air Susp Solenoid Command	5	Driver Output Overcurrent Aux Air Suspension Solenoid Under	Open Circuit or Defective Solenoid		1602-E12
33	520802	Aux Air Susp Solenoid Command	6	Current or Open Circuit Aux Air Suspension Solenoid output	Short To Ground or Defective Solenoid		1602-E12
33	520803	Park Brake Relay Command	5	Over Current Park Brake Relay Under Current or	Open Circuit or Defective Solenoid		1601-E7
33	520803	Park Brake Relay Command	6	Open Circuit Park Brake Relay Over Current	Short To Ground or Defective Solenoid		1601-F1 (BUS) 1601-E7
33	520804	RKE Option Door Pod Not Present	14	Missing Remote Keyless entry door	Expected RKE door pod is not present or	Not available	1601-F1 (BUS) Not
				pod	in the wrong slot or bad door pod harness		available
33	520806	Fifth Wheel Jaw Unlock Sol2 Command	5	Fifth Wheel Jaw Unlock Solenoid2 output Under Current or Open Circuit	Open Circuit or Defective Solenoid
33 33	520806 520807	Fifth Wheel Jaw Unlock Sol2 Command Engine RPM Interrupt Output	6 5	Fifth Wheel Jaw Unlock Solenoid2 output Overcurrent Engine RPM Interrupt Relay Driver	Short To Ground or Defective Solenoid Current below normal or open circuit		1601-F3
33	520807	Engine RPM Interrupt Output	6	Output Under Current Or Open Circuit Engine RPM Interrupt Relay Driver	Current above normal or grounded circuit		1601-F3
33	520813	Aux_Relay_Driver_3	5	Output Overcurrent Relay Driver 3 Undercurrent	Open in Relay Driver 3 Circuit		1601-E3
33 33	520813 520814	Aux_Relay_Driver_3 Aux_Relay_Driver_4	6 5	Relay Driver 3 Overcurrent Relay Driver 4 Undercurrent	Short To Ground or Overload in Relay Driver 3 Output Circuit Open in Relay Driver 4 Circuit		1601-E3 1601-E4
33 33	520814 520815	Aux_Relay_Driver_4 Sixth Gear Disable Relay	6 5	Relay Driver 4 Overcurrent Sixth Speed Disable Relay is	Short To Ground or Overload in Relay Driver 4 Output Circuit Open Circuit on the Sixth Gear Disable		1601-E4 1601-E4
33	520815	Sixth Gear Disable Relay	6	Undercurrent or Open Circuit Sixth Speed Disable Relay is	Relay Short to Battery on the Sixth Speed
33	520816	Sixth Gear Disable LED	5	Overcurrent Sixth Gear Disable LED Relay Driver	Disable Relay Open Circuit on the Sixth Gear Disable
33	520816	Sixth Gear Disable LED	6	Output is Under Current or Open Circuit Sixth Gear Disable LED Relay Driver	LED Relay Driver Short to Battery on the Sixth Speed
33	520817	Sixth Gear Disable Switch	2	Output is Over Current Sixth Speed Disable Switch status is	Disable LED Relay Fault Switch Actuator or Micro switch for
33	520818	HEV ePTO Pressure Feedback		invalid HEV ePTO Pressure Feedback
				Sensor reading above normal range	High or faulty sensor system
33 33	520818 520819	HEV ePTO Pressure Feedback Universal Air Solenoid Relay Driver 1	1 5	HEV ePTO Pressure Feedback Sensor reading below normal range Universal Air Solenoid Relay Driver 1	HEV ePTO Pressure Feedback Shorted to Ground or Open Circuit or faulty sensor system Open Circuit or Defective Solenoid
33	520819	Universal Air Solenoid Relay Driver 1	6	Under Current Or Open Circuit Universal Air Solenoid Relay Driver 1	Short To Ground or Defective Solenoid
33	520820	Wig-Wag Switch	2	Over Current Wig-Wag Switch Error	Faulty Switch Actuator or Microswitch for
33	520822	Remote Condenser Electric Fan	5	Electric Fan A output Under Current	Wig-Wag Switch Open Circuit in Electric Fan A output	Not available	Not
33	520822	Control A Remote Condenser Electric Fan	6	or Open Circuit Electric Fan A output Short-Circuit	Short circuit detected in Electric Fan A	Electric Fan A can be configured for	available Not
33	520823	Control A Remote Condenser Electric Fan	5	Electric Fan B output Under Current	output Open Circuit in Electric Fan B output	two different outputs: Low Side Driver RD4 – Fault is reported when Short to Battery condition is detected High Side Driver RD31 – Fault is reported when Short to Ground condition is Detected Not available	available Not
33	520823	Control B Remote Condenser Electric Fan	6	or Open Circuit Electric Fan B output Short-Circuit	Short circuit detected in Electric Fan B	Electric Fan B can be configured for	available Not
33	520839	Control B Transfer Case Output Shaft	5	Transfer Case Output Shaft	output Open in Odometer Shutoff Relay Circuit	two different outputs: Low Side Driver RD7 – Fault is reported when Short to Battery condition is detected High Side Driver RD32 – Fault is reported when Short to Ground condition is Detected	available
33	520839	Odometer Shutoff Relay Transfer Case Output Shaft	6	Odometer Shutoff Relay Undercurrent Transfer Case Output Shaft	Short or Overload in odometer Shutoff		1601-E4
		Odometer Shutoff Relay		Odometer Shutoff Relay Overcurrent	Relay Circuit
33 33	520840 520841	Switch 12-Pack Location 7 Switch 12-Pack Location 8	13 13	Unexpected switch in 12-pack (MID 5) bottom row position 1 from left (Switch 7 of 12) Unexpected switch in 12-pack (MID	Switch actuator installed or bad microswitch in location configured as empty Switch actuator installed or bad	Not available Not available	Not available Not
33	520842	Switch 12-Pack Location 9	13	5) bottom row position 2 from left (Switch 8 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520843	Switch 12-Pack Location 10	13	5) bottom row position 3 from left (Switch 9 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520844	Switch 12-Pack Location 11	13	5) bottom row position 4 from left (Switch 10 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
				5) bottom row position 5 from left (Switch 11 of 12)	microswitch in location configured as empty		available

33	520845	Switch 12-Pack Location 12	13	Unexpected switch in 12-pack (MID 5) bottom row position 6 from left (Switch 12 of 12)	Switch actuator installed or bad microswitch in location configured as empty	Not available	Not available
33 33	520846 520847	Switch 12-Pack Location 1 Switch 12-Pack Location 2	13 13	Unexpected switch in 12-pack (MID 6) top row position 1 from left (Switch 1 of 12) Unexpected switch in 12-pack (MID	Switch actuator installed or bad microswitch in location configured as empty Switch actuator installed or bad	Not available Not available	Not available Not
33	520848	Switch 12-Pack Location 3	13	6) top row position 2 from left (Switch 2 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520849	Switch 12-Pack Location 4	13	6) top row position 3 from left (Switch 3 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520850	Switch 12-Pack Location 5	13	6) top row position 4 from left (Switch 4 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520851	Switch 12-Pack Location 6	13	6) top row position 5 from left (Switch 5 of 12) Unexpected switch in 12-pack (MID	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520852	Switch 6-Pack #2 Location 1	13	6) top row position 6 from left (Switch 6 of 12) Unexpected switch in switchpack 2	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520853	Switch 6-Pack #2 Location 2	13	(MID 7) position 1 from left (Switch 1 of 6) Unexpected switch in switchpack 2	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520854	Switch 6-Pack #2 Location 3	13	(MID 7) position 2 from left (Switch 2 of 6) Unexpected switch in switchpack 2	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520855	Switch 6-Pack #2 Location 4	13	(MID 7) position 3 from left (Switch 3 of 6) Unexpected switch in switchpack 2	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520856	Switch 6-Pack #2 Location 5	13	(MID 7) position 4 from left (Switch 4 of 6) Unexpected switch in switchpack 2	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520857	Switch 6-Pack #2 Location 6	13	(MID 7) position 5 from left (Switch 5 of 6) Unexpected switch in switchpack 2	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520858	Switch 6-Pack #1 Location 1	13	(MID 7) position 6 from left (Switch 6 of 6) Unexpected switch in switchpack 1	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520859	Switch 6-Pack #1 Location 2	13	(MID 15) position 1 from left (Switch 1 of 6) Unexpected switch in switchpack 1	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520860	Switch 6-Pack #1 Location 3	13	(MID 15) position 2 from left (Switch 2 of 6) Unexpected switch in switchpack 1	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520861	Switch 6-Pack #1 Location 4	13	(MID 15) position 3 from left (Switch 3 of 6) Unexpected switch in switchpack 1	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520862	Switch 6-Pack #1 Location 5	13	(MID 15) position 4 from left (Switch 4 of 6) Unexpected switch in switchpack 1	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520863	Switch 6-Pack #1 Location 6	13	(MID 15) position 5 from left (Switch 5 of 6) Unexpected switch in switchpack 1	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520864	Rear Axle Load Distribution Switch	2	(MID 15) position 6 from left (Switch 6 of 6) Rear Axle Load Distribution Switch	microswitch in location configured as empty Faulty Switch Actuator or Microswitch for	Not available	available Not
33	520865	Rear Axle Load Distribution Solenoid	5	Error Rear Axle Load Distribution A Relay	Rear Axle Load Distribution Switch Open Circuit or Defective Solenoid	Not available	available Not
		A		Under Current Or Open Circuit			available
33 33	520865 520866	Rear Axle Load Distribution Solenoid A Rear Axle Load Distribution Solenoid	6 5	Rear Axle Load Distribution A Relay Short To Ground Rear Axle Load Distribution B Relay	Short To Ground or Defective Solenoid Open Circuit or Defective Solenoid	Not available Not available	Not available Not
		B		Under Current Or Open Circuit			available
33 33	520866 520867	Rear Axle Load Distribution Solenoid B Snow Valve Motor Relays	6 6	Rear Axle Load Distribution B Relay Short To Ground Snow Valve Motor Relays Output	Short To Ground or Defective Solenoid Short to Ground or Defective Relay(s)	Not available Not available	Not available Not
33	520868	HVAC Condenser Pusher Fan Relay	5	Over Current HVAC Condenser Pusher Fan	Open Circuit on HVAC Condenser Pusher	Not available	available Not
33	520868	HVAC Condenser Pusher Fan Relay	6	Output Under Current or Open Circuit HVAC Condenser Pusher Fan	Fan circuit Short to Ground in the HVAC Condenser	Not available	available Not
33	520869	Trailer BO Stop	6	Output Over Current Trailer BO Stop Overcurrent	Pusher Fan circuit Current above normal or grounded circuit	Not available	available 1601-F9
33	520870	Trailer BO Marker	6	Trailer BO Marker Overcurrent	Current above normal or grounded circuit	Not available	1601-E14
33	520871	BO Ignition_1	6	BO Ignition_1 Overcurrent	Current above normal or grounded circuit	Not available	1601-E16
33	520872	BO Ignition_2	6	BO Ignition_2 Overcurrent	Current above normal or grounded circuit	Not available	1601-F1
33	520873	BO Ignition_3	6	BO Ignition_3 Overcurrent	Current above normal or grounded circuit	Not available	1601-E1
33	520874	BO Ignition_4	6	BO Ignition_4 Overcurrent	Current above normal or grounded circuit	Not available	1601-E2
33 33	520875 520876	Winch IN / OUT Switch Winch IN Command	2 5	Winch IN OUT Switch Error Winch IN relay driver under current	Faulty Switch Actuator or Microswitch for Winch IN OUT Switch Current below normal or open circuit	Not available Not available	Not available Not
33	520876	Winch IN Command	6	or open circuit Winch IN relay driver over current	Current above normal or grounded circuit	Not available	available Not
33	520877	Winch OUT Command	5	Winch OUT relay driver under	Current below normal or open circuit	Not available	available Not
33	520877	Winch OUT Command	6	current or open circuit Winch OUT relay driver over current	Current above normal or grounded circuit	Not available	available Not
33	520878	NEC Park Brake Command	5	NEC Park Brake Command is Under	Open Circuit or Defective Solenoid	Not available	available Not
33	520878	NEC Park Brake Command	6	Current Or Open Circuit NEC Park Brake Command is	Short To Ground or Defective Solenoid	Not available	available Not
				overcurrent			available

33 33	520879 520879	NEC Service Door Command 5 NEC Service Door Command 6	NEC Service Door Command is Open Circuit or Defective Solenoid Not available Under Current Or Open Circuit NEC Service Door Command is Short To Ground or Defective Solenoid Not available	Not available Not
33	520880	NEC Post Trip Inspection Command 5	overcurrent NEC Post Trip Inspection Command Open Circuit or Defective Solenoid Not available	available Not
			is Under Current Or Open Circuit	available
33 33	520880 520881	NEC Post Trip Inspection Command 6 TEM Interlocked Switch Relay 1 5	NEC Post Trip Inspection Command Short To Ground or Defective Solenoid Not available is overcurrent TEM Switch Interlocked Output Open circuit in TEM Interlocked circuit 1 Not available	Not available Not
33	520881	TEM Interlocked Switch Relay 1 6	Circuit 1 undercurrent TEM Switch Interlocked Output Short circuit in TEM Interlocked circuit 1 Not available	available Not
33	520882	TEM Interlocked Switch Relay 2 5	Circuit 1 overcurrent TEM Switch Interlocked Output Open circuit in TEM Interlocked circuit 2 Not available	available Not
33	520882	TEM Interlocked Switch Relay 2 6	Circuit 2 undercurrent TEM Switch Interlocked Output Short circuit in TEM Interlocked circuit 2 Not available	available Not
33	520883	Transfer Case Low Indicator 5	Circuit 2 overcurrent Transfer case low indicator high side Not available Not available	available 1601-F7
33	520883	Transfer Case Low Indicator 6	output exhibits an undercurrent condition or is open Transfer case low indicator high side Not available Not available	1601-F7
33	520884	Transfer Case Neutral Indicator 5	output exhibits an overcurrent condition or is short to ground Transfer case neutral indicator high Not available Not available	1601-F6
33	520884	Transfer Case Neutral Indicator 6	side output exhibits an undercurrent condition or is open Transfer case neutral indicator high Not available Not available	1601-F6
			side output exhibits an overcurrent condition or is short to ground
33 33	520885 520885	Windshield Heat Left Output 5 Windshield Heat Left Output 6	Windshield Heat Left output Under Open Circuit in Windshield Heat Left Not available Current or Open Circuit Output Windshield Heat Left Output Short- Short Circuit detected in Windshield Heat Not available	Not available Not
33	520886	Windshield Heat Right Output 5	Circuit Left Output Windshield Heat Right Output Under Open Circuit detected in Windshield Heat Not available	available Not
33	520886	Windshield Heat Right Output 6	Current or Open Circuit Right Output Windshield Heat Right Output Short- Short Circuit detected in Windshield Heat Not available	available Not
33	520887	Windshield Heat Left Temp Sensor 0	Circuit Right Output Left Windshield Heat Temperature Left Windshield Heat Temperature Sensor Not available	available Not
33	520887	Windshield Heat Left Temp Sensor 1	Sensor reading above normal range Shorted High or Open Circuit or faulty sensor system Left Windshield Heat Temperature Left Windshield Heat Temperature Sensor Not available	available Not
			Sensor reading below normal range Short to Ground or faulty sensor system	available
33 33	520888 520888	Windshield Heat Right Temp Sensor 0 Windshield Heat Right Temp Sensor 1	Right Windshield Heat Temperature Right Windshield Heat Temperature Not available Sensor reading above normal range Sensor Shorted High or Open Circuit or faulty sensor system Right Windshield Heat Temperature Right Windshield Heat Temperature Not available	Not available Not
33	520889	Relay Driver 9, Channel 1 13	Sensor reading below normal range Sensor Short to Ground or faulty sensor system Connector J4 Pin E11 has a load on Connector J4 Pin E11 is drawing current Not available	available Not
			this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	available
33	520890	Relay Driver 10, Channel 2 13	Connector J4 Pin E10 has a load on Connector J4 Pin E10 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	Not available
33	520891	Relay Driver 11, Channel 3 13	Connector J4 Pin E15 has a load on Connector J4 Pin E15 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	Not available
33	520892	Relay Driver 12, Channel 4 13	Connector J4 Pin E14 has a load on Connector J4 Pin E14 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	Not available
33	520893	Relay Driver 13, Channel 5 13	Connector J4 Pin E16 has a load on Connector J4 Pin E16 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	Not available
33	520894	Relay Driver 14, Channel 6 13	Connector J4 Pin E12 has a load on Connector J4 Pin E12 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	Not available
33	520895	Relay Driver 15, Channel 7 13	Connector J4 Pin E13 has a load on Connector J4 Pin E13 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	Not available
33 33	520896 520897	Relay Driver 16, Channel 8 13 Relay Driver 17, Channel 9 13	Connector J4 Pin E9 has a load on Connector J4 Pin E9 is drawing current Not available this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness Connector J4 Pin F6 has a load on Connector J4 Pin F6 is drawing current Not available	Not available Not
33	520898	Relay Driver 18, Channel 10 13	this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness Connector J4 Pin F7 has a load on Connector J4 Pin F7 is drawing current Not available	available Not
33	520899	Relay Driver 19, Channel 11 13	this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness Connector J4 Pin F2 has a load on Connector J4 Pin F2 is drawing current Not available	available Not
33	520900	Relay Driver 20, Channel 12 13	this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness Connector J4 Pin F3 has a load on Connector J4 Pin F3 is drawing current Not available	available Not
33	520901	Relay Driver 21, Channel 13 13	this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness Connector J4 Pin F1 has a load on Connector J4 Pin F1 is drawing current Not available	available Not
			this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	available
33 33	520902 520903	Relay Driver 22, Channel 14 13 Relay Driver 23, Channel 15 13	Connector J4 Pin F5 has a load on Connector J4 Pin F5 has a load on this pin Not available this pin that has been configured as that has been configured as unused unused Connector J4 Pin F4 has a load on Connector J4 Pin F4 is drawing current Not available	Not available Not
			this pin that has been configured as and it is configured as unused check unused configuration and or wiring harness	available

33 33	520904 520905	Relay Driver 24, Channel 16 Relay Driver 25, Channel 17	13 13	Connector J4 Pin F8 has a load on this pin that has been configured as unused Connector J4 Pin F10 has a load on	Connector J4 Pin F8 is drawing current and it is configured as unused check configuration and or wiring harness Connector J4 Pin F10 is drawing current	Not available Not available	Not available Not
				this pin that has been configured as unused	and it is configured as unused check configuration and or wiring harness		available
33	520906	Relay Driver 26, Channel 18	13	Connector J4 Pin F11 has a load on this pin that has been configured as unused	Connector J4 Pin F11 is drawing current and it is configured as unused check configuration and or wiring harness	Not available	Not available
33	520907	Relay Driver 27, Channel 19	13	Connector J4 Pin F14 has a load on this pin that has been configured as unused	Connector J4 Pin F14 is drawing current and it is configured as unused check configuration and or wiring harness	Not available	Not available
33	520908	Relay Driver 28, Channel 20	13	Connector J4 Pin F15 has a load on this pin that has been configured as unused	Connector J4 Pin F15 is drawing current and it is configured as unused check configuration and or wiring harness	Not available	Not available
33	520909	Relay Driver 29, Channel 21	13	Connector J4 Pin F13 has a load on this pin that has been configured as unused	Connector J4 Pin F13 is drawing current and it is configured as unused check configuration and or wiring harness	Not available	Not available
33 33	520910 520911	Relay Driver 30, Channel 22 Relay Driver 31, Channel 23	13 13	Connector J4 Pin F9 has a load on this pin that has been configured as unused Connector J4 Pin F16 has a load on	Connector J4 Pin F9 is drawing current and it is configured as unused check configuration and or wiring harness Connector J4 Pin F16 is drawing current	Not available Not available	Not available Not
				this pin that has been configured as unused	and it is configured as unused check configuration and or wiring harness		available
33	520912	Relay Driver 32, Channel 24	13	Connector J4 Pin F12 has a load on this pin that has been configured as unused	Connector J4 Pin F12 is drawing current and it is configured as unused check configuration and or wiring harness	Not available	Not available
33 33	520913 520914	Relay Driver 1, Channel 25 Relay Driver 2, Channel 26	13 13	Connector J4 Pin E7 has a load on this pin that has been configured as unused Connector J4 Pin E6 has a load on	Connector J4 Pin E7 is drawing current and it is configured as unused check configuration and or wiring harness Connector J4 Pin E6 is drawing current	Not available Not available	Not available Not
33	520915	Relay Driver 3, Channel 27	13	this pin that has been configured as unused Connector J4 Pin E3 has a load on	and it is configured as unused check configuration and or wiring harness Connector J4 Pin E3 is drawing current	Not available	available Not
33	520916	Relay Driver 4, Channel 28	13	this pin that has been configured as unused Connector J4 Pin E2 has a load on	and it is configured as unused check configuration and or wiring harness Connector J4 Pin E2 is drawing current	Not available	available Not
33	520917	Relay Driver 5, Channel 29	13	this pin that has been configured as unused Connector J4 Pin E4 has a load on	and it is configured as unused check configuration and or wiring harness Connector J4 Pin E4 is drawing current	Not available	available Not
33	520918	Relay Driver 6, Channel 30	13	this pin that has been configured as unused Connector J4 Pin E8 has a load on	and it is configured as unused check configuration and or wiring harness Connector J4 Pin E8 is drawing current	Not available	available Not
				this pin that has been configured as unused	and it is configured as unused check configuration and or wiring harness		available
33 33	520919 520920	Relay Driver 7, Channel 31 Relay Driver 8, Channel 32	13 13	Connector J4 Pin E1 has a load on this pin that has been configured as unused Connector J4 Pin E5 has a load on	Connector J4 Pin E1 is drawing current and it is configured as unused check configuration and or wiring harness Connector J4 Pin E5 is drawing current	Not available Not available	Not available Not
33	520922	Switch 6-Pack #3 Location 1	13	this pin that has been configured as unused Unexpected switch in switchpack 3	and it is configured as unused check configuration and or wiring harness Switch actuator installed or bad	Not available	available Not
33	520923	Switch 6-Pack #3 Location 2	13	(MID 3) position 1 from left (Switch 1 of 6) Unexpected switch in switchpack 3	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520924	Switch 6-Pack #3 Location 3	13	(MID 3) position 2 from left (Switch 2 of 6) Unexpected switch in switchpack 3	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520925	Switch 6-Pack #3 Location 4	13	(MID 3) position 3 from left (Switch 3 of 6) Unexpected switch in switchpack 3	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520926	Switch 6-Pack #3 Location 5	13	(MID 3) position 4 from left (Switch 4 of 6) Unexpected switch in switchpack 3	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520927	Switch 6-Pack #3 Location 6	13	(MID 3) position 5 from left (Switch 5 of 6) Unexpected switch in switchpack 3	microswitch in location configured as empty Switch actuator installed or bad	Not available	available Not
33	520928	Daytime Running Light Tell Tale	5	(MID 3) position 6 from left (Switch 6 of 6) DRL Tell Tale Relay Command is	microswitch in location configured as empty Open Circuit or Defective Solenoid	Not available	available Not
33	520928	Command Daytime Running Light Tell Tale	6	Under Current Or Open Circuit DRL Tell Tale Relay Command is	Short To Ground or Defective Solenoid	Not available	available Not
58	109	Command Coolant Pressure	14	Overcurrent High Refrigerant Pressure	High refrigerant pressure in system or		available
58	168	Electrical Potential (Voltage)	3	Battery Voltage High	pressure sensor unplugged or faulty Pressure sensor Battery voltage above 16VDC
58	168	Electrical Potential (Voltage)	4	Battery Voltage Low	Battery voltage below 12.1VDC
58 58	1547 1547	A/C Evaporator Temperature A/C Evaporator Temperature	0 1	Duct Inlet Sensor High Duct Inlet sensor Low	Recirc sensor wire shorted to power or Recirc sensor missing or open circuit or faulty Recirc sensor Recirc sensor wire shorted to ground or
58	1548	HVAC Duct Temperature	3	Duct temperature sensor voltage	fault Recirc sensor Duct temperature sensor wire shorted to
				high	power or open circuit or faulty sensor

International Trucks Diagnostics Trouble Codes (DTCs) | Truckmanualshub.com (2024)