DTC Index

NOTE: Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

DTC	Description	Possible Causes	Action
C1105-67	Brake lamp control signal incorrect after event - signal incorrect after event	NOTE: The stoplamp-switch contains the brake-lamp -switch (BLS) and the brake-switch (BS) these are located within the same housing The BLS circuit and the BS circuit have failed the plausibility test Switch internal fault Circuit fault	NOTE: Check for correct operation of the stop-lamps Refer to the electrical circuit diagrams and check the ABS module circuit to the hill decent relay for fault
C1109-24	Vehicle dynamics control switch - signal stuck high	Switch internal fault Circuit short to power	NOTE: This DTC may be logged if the switch state is active for over 1 minute Check for correct switch operation. Refer to the electrical circuit diagrams and check the ABS module circuit to the center facia switch pack / DSC switch for circuit short to power
C1A00-16	Control module - circuit voltage below threshold	Low voltage detected Circuit short to ground, open circuit or high resistance	NOTE: DTC may be stored due to a vehicle charging or starting fault Using the manufacturer approved diagnostic system check other modules for related DTCs. Check for correct vehicle battery / charging system operation. Refer to the electrical circuit diagrams and check the ABS module power (UZ) and ground circuit for fault
C1A00-17	Control module - circuit voltage above threshold	Voltage detected above preset maximum	NOTE: DTC may be stored due to battery charger use or vehicle charging fault Using the manufacturer approved diagnostic system check other modules for related DTCs. Check for correct vehicle battery and charging system operation
C1A00-1C	Control module - circuit voltage out of range	Momentary low voltage detected	NOTE: DTC may be stored due to a vehicle charging or starting fault Using the manufacturer approved diagnostic system check other modules for related DTCs. Check for correct vehicle charging system operation. Refer to the electrical circuit diagrams and check the ABS module power (UZ) and ground circuit for fault
C1A00-45	Control module - program memory failure	Module internal fault	Using the manufacturer approved diagnostic system. Clear the DTC and retest if the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A00-46	Control module - calibration / parameter memory failure	Incorrect car configuration file (CCF) data received from IPC or CCF incorrectly configured Module installed to unrecognized vehicle configuration Module calibration/parameter memory failure (internal error)	Configure the module using the approved diagnostic system. Clear the DTC and check if the DTC resets after ignition reset following >10 seconds ignition on. If the possible causes listed have been checked and the DTC persists, suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A00-49	Control module - internal electronic failure	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns, suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A00-4A	Control module - incorrect component installed	The stored vehicle variant code in the control module (EEPROM) does not match the variant code received via the CAN bus	Using the manufacturer approved diagnostic system, confirm that the stored vehicle variant code and the transmitted variant code match. Configure as required
C1A00-4B	Control module - over temperature	The control module has excited a preset maximum temperature Module internal fault	NOTE: Investigate the cause of the control module temperature event Using the manufacturer approved diagnostic system, clear the DTC and retest. If DTC returns suspect an internal fault with the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A00-68	Control module - event information	Control module event information	Using the manufacturer approved diagnostic system, check for DTCs relating to a defective steering angle sensor, wheel speed sensor or yaw rate sensor. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A00-88	Control module - bus off	CAN bus circuit fault	Using the manufacturer approved diagnostic system, carry out the CAN network integrity test. Refer to the electrical circuit diagrams and check the CAN bus circuit to the ABS module for circuit short to power, short to ground, open circuit or high resistance
C1A76-01	Valve relay circuit - general electrical failure	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If DTC returns suspect an internal fault with the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A76-04	Valve relay circuit - general electrical failure	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If DTC returns suspect an internal fault with the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A77-16	Valve relay circuit - circuit voltage below threshold	Low voltage detected Circuit fault	NOTE: DTC may be stored due to a vehicle charging or starting fault Using the manufacturer approved diagnostic system, check other modules for related DTCs. Check for correct vehicle charging system operation. Refer to the electrical circuit diagrams and check the ABS module (UBVR) power and ground circuits for fault
C1A78-04	Front left inlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A79-04	Front left outlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A80-04	Front right inlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A81-04	Front right outlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A82-04	Rear left inlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A83-04	Rear left outlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A84-04	Rear right inlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A85-04	Rear right outlet valve - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A86-04	Commutation valve #1 - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A87-04	Commutation valve #2 - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A88-04	High pressure switching valve #1 - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A89-04	High pressure switching valve #2 - system internal failures	Module internal fault	Using the manufacturer approved diagnostic system, clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A90-12	Wheel speed sensor supply circuit - circuit short to battery	Wheel speed sensor supply circuit short to power	Refer to the electrical circuit diagrams and check the wheel speed sensor supply (WP) circuit from the ABS module for short to power
C1A91-13	Front left wheel speed sensor circuit - circuit open	Open circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for open circuit
C1A91-25	Front left wheel speed sensor circuit - signal shape / waveform failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for fault
C1A91-2F	Front left wheel speed sensor circuit - signal erratic	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for fault
C1A91-36	Front left wheel speed sensor circuit - signal frequency too low	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for fault
C1A91-38	Front left wheel speed sensor circuit - signal frequency incorrect	Front left wheel speed sensor reluctor ring damaged	Visually inspect the front left wheel speed sensor reluctor ring for damage. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A91-62	Front left wheel speed sensor circuit - signal compare failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for fault
C1A91-64	Front left wheel speed sensor circuit - signal plausibility failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for fault
C1A91-65	Front left wheel speed sensor circuit - signal has too few transitions / events	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front left wheel speed sensor for fault
C1A91-78	Front left wheel speed sensor circuit - alignment or adjustment incorrect	Front left wheel speed sensor to reluctor ring air gap incorrect	Check and correct the front left wheel speed sensor reluctor ring air gap
C1A92-13	Rear left wheel speed sensor circuit - circuit open	Open circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for open circuit
C1A92-25	Rear left wheel speed sensor circuit - signal shape / waveform failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for fault
C1A92-2F	Rear left wheel speed sensor circuit - signal erratic	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for fault
C1A92-36	Rear left wheel speed sensor circuit - signal frequency too low	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for fault
C1A92-38	Rear left wheel speed sensor circuit - signal frequency incorrect	Rear left wheel speed sensor reluctor ring damaged	Visually inspect the rear left wheel speed sensor reluctor ring for damage. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A92-62	Rear left wheel speed sensor circuit - signal compare failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for fault
C1A92-64	Rear left wheel speed sensor circuit - signal plausibility failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for fault
C1A92-65	Rear left wheel speed sensor circuit - signal has too few transitions / events	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear left wheel speed sensor for fault
C1A92-78	Rear left wheel speed sensor circuit - alignment or adjustment incorrect	Rear left wheel speed sensor to reluctor ring air gap incorrect	Check and correct the rear left wheel speed sensor reluctor ring air gap
C1A93-13	Rear right wheel speed sensor circuit - circuit open	Open circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for open circuit
C1A93-25	Rear right wheel speed sensor circuit - signal shape / waveform failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for fault
C1A93-2F	Rear right wheel speed sensor circuit - signal erratic	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for fault
C1A93-36	Rear right wheel speed sensor circuit - signal frequency too low	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for fault
C1A93-38	Rear right wheel speed sensor circuit - signal frequency incorrect	Rear left wheel speed sensor reluctor ring damaged	Visually inspect the rear right wheel speed sensor reluctor ring for damage. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A93-62	Rear right wheel speed sensor circuit - signal compare failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for fault
C1A93-64	Rear right wheel speed sensor circuit - signal plausibility failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for fault
C1A93-65	Rear right wheel speed sensor circuit - signal has too few transitions / events	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the rear right wheel speed sensor for fault
C1A93-78	Rear right wheel speed sensor circuit - alignment or adjustment incorrect	Rear left wheel speed sensor to reluctor ring air gap incorrect	Check and correct the rear right wheel speed sensor reluctor ring air gap
C1A94-13	Front right wheel speed sensor circuit - circuit open	Open circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for open circuit
C1A94-25	Front right wheel speed sensor circuit - signal shape / waveform failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for fault
C1A94-2F	Front right wheel speed sensor circuit - signal erratic	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for fault
C1A94-36	Front right wheel speed sensor circuit - signal frequency too low	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for fault
C1A94-38	Front right wheel speed sensor circuit - signal frequency incorrect	Front right wheel speed sensor reluctor ring damaged	Visually inspect the front right wheel speed sensor reluctor ring for damage. Replace as required. Refer to the new module / component installation note at the top of the DTC index
C1A94-62	Front right wheel speed sensor circuit - signal compare failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for fault
C1A94-64	Front right wheel speed sensor circuit - signal plausibility failure	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for fault
C1A94-65	Front right wheel speed sensor circuit - signal has too few transitions / events	Circuit fault Sensor internal failure Module internal fault	Refer to the electrical circuit diagrams and check the circuit between the ABS module and the front right wheel speed sensor for fault
C1A94-78	Front right wheel speed sensor circuit - alignment or adjustment incorrect	Front right wheel speed sensor to reluctor ring air gap incorrect	Check and correct the front right wheel speed sensor reluctor ring air gap
C1A95-4A	Wheel speed sensor circuit - incorrect component installed	Incorrect wheel speed sensor installed	Check the correct wheel speed sensor is installed to vehicle specification
C1A95-62	Wheel speed sensor circuit - signal compare failure	Incorrectly oriented wheel speed sensor	Locate for the incorrectly orientated wheel speed sensor. Remove and relocate correctly
C1A95-64	Wheel speed sensor circuit - signal plausibility failure	Multiple circuit faults Multiple sensor internal failures Multiple module internal failures	Refer to the electrical circuit diagrams and check the ABS module circuit to the wheel speed sensors for multiple circuit or sensor internal failures. If no individual sensor or circuit faults are evident replace the 4 wheel speed sensors. Refer to the warranty policy and procedures information if a module / component is suspect
C1A96-24	Brake light switch circuit - signal stuck high	Stoplamp-switch (BLS) signal is Active (1) (Footbrake pedal pressed condition) for more than 60 seconds while the vehicle is not braking Stoplamp-switch circuit fault Stoplamp-switch internal fault Stoplamp-switch incorrect installation Stoplamp-switch incorrectly adjusted	Refer to the electrical circuit diagrams and check the ABS module circuit to the stoplamp switch for circuit short to power
C1A96-62	Brake light switch circuit - signal compare failure	Signal compare failure the stoplamp-switch (BLS) and the brake-switch (BS) have shared the same output state at the same time Stoplamp-switch circuit fault Stoplamp-switch internal fault	Refer to the electrical circuit diagrams and check the ABS module circuit to the stoplamp switch for circuit for fault
C1A96-64	Brake light switch circuit - signal plausibility failure	Signal plausibility failure the brake fluid hydraulic pressure (PS) has exceeded 10bar and the stoplamp-switch output state has not switched from Inactive (0) to Active (1) (Footbrake pedal pressed condition) Stoplamp-switch Circuit fault Stoplamp-switch internal fault Stoplamp-switch incorrect installation Stoplamp-switch incorrectly adjusted	NOTE: Check for pressure sensor DTCs C1A99-01 or C1A99-49. If either of these DTCs has been stored carry out the specified action prior to investigating DTC C1A96-64 Refer to the electrical circuit diagrams and check the ABS module circuit to the stoplamp switch for circuit for fault
C1A97-24	Lateral accelerometer circuit - signal stuck high	The signal from the yaw rate sensor is greater than expected when the vehicle is stationary Circuit short to power	Refer to the electrical circuit diagrams and check the anti-lock (ABS) control module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A97-27	Lateral accelerometer circuit - signal rate of change above threshold	The signal from the yaw rate sensor is above the preset maximum	Refer to the electrical circuit diagrams and check the anti-lock (ABS) control module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A97-28	Lateral accelerometer circuit - signal bias level out of range / zero adjustment failure	Yaw rate sensor signal bias level out of range / zero adjustment failure	Refer to the electrical circuit diagrams and check the anti-lock (ABS) control module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A97-29	Lateral accelerometer circuit - signal invalid	The value from the yaw rate sensor is invalid	NOTE: Driving conditions such as driving in circles or a banked track may cause the DTC to log Confirm that driving style has not caused the DTC to log. Using the manufacturer approved diagnostic system. Clear the DTC and retest. Refer to the electrical circuit diagrams and check the anti-lock (ABS) control module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A97-49	Lateral accelerometer circuit - internal electronic failure	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the anti-lock (ABS) control module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A97-64	Lateral accelerometer circuit - signal plausibility failure	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-08	Yaw rate sensor circuit - bus signal / message failures	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-22	Yaw rate sensor circuit - signal amplitude > maximum	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-28	Yaw rate sensor circuit - signal bias level out of range / zero adjustment failure	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-29	Yaw rate sensor circuit - signal invalid	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-61	Yaw rate sensor circuit - signal calculation failure	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-62	Yaw rate sensor circuit - signal compare failure	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-64	Yaw rate sensor circuit - signal plausibility failure	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-86	Yaw rate sensor circuit - signal invalid	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-87	Yaw rate sensor circuit - missing message	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-92	Yaw rate sensor circuit - performance or incorrect operation	Circuit fault Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A98-95	Yaw rate sensor circuit - incorrect assembly	Incorrect component installed	Confirm the correct yaw rate sensor. is installed to vehicle specification
C1A98-96	Yaw rate sensor circuit - component internal failure	Sensor internal failure	Refer to the electrical circuit diagrams and check the ABS module CAN bus circuit to the yaw rate sensor. Check the power and ground supply circuits to the yaw rate sensor also check the installation and location for security
C1A99-01	Pressure sensor circuit - general electrical failure	ABS module internal failure	Using the manufacturer approved diagnostic system clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the warranty policy and procedures information if a module / component is suspect
C1A99-49	Control module - internal electronic failure	ABS module internal failure	Using the manufacturer approved diagnostic system clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the warranty policy and procedures information if a module / component is suspect
C1B00-27	Steering angle sensor -signal rate of change above threshold	Steering angle sensor internal failure	Using the manufacturer approved diagnostic system, check the steering angle sensor module for related stored DTCs
C1B00-29	Steering angle sensor - signal invalid	Steering angle sensor internal failure	Using the manufacturer approved diagnostic system, check the steering angle sensor module for related stored DTCs
C1B00-61	Steering angle sensor - signal calculation failure	Steering angle sensor internal failure	Using the manufacturer approved diagnostic system, check the steering angle sensor module for related stored DTCs
C1B00-64	Steering angle sensor - signal plausibility failure	Steering angle sensor internal failure	Using the manufacturer approved diagnostic system, check the steering angle sensor module for related stored DTCs
C1B00-92	Steering angle sensor - performance or incorrect operation	Steering angle sensor internal failure	Using the manufacturer approved diagnostic system, check the steering angle sensor module for related stored DTCs
C1B02-01	Return pump circuit - general electrical failure	ABS module internal failure	Suspect the ABS module. Replace as required. Refer to the warranty policy and procedures information if a module / component is suspect
C1B02-16	Return pump circuit - circuit voltage below threshold	Return pump circuit voltage below threshold	Refer to the electrical circuit diagrams and check the ABS module for battery voltage at the fused supply (UBMR) circuit
C1B02-49	Return pump circuit - internal electronic failure	ABS module internal failure	Using the manufacturer approved diagnostic system clear the DTC and retest. If the DTC returns suspect the ABS module. Replace as required. Refer to the warranty policy and procedures information if a module / component is suspect
C1B22-24	Hill descent switch - signal stuck high	Circuit short to power	NOTE: This DTC may be logged if the switch is pressed for over 1 minute Check for correct hill decent switch operation. Refer to the electrical circuit diagrams and check the Centre-console switch-pack / Hill-decent Switch circuit for short to power
C2009-95	Front axle wheel speed sensors swapped - incorrect assembly	Incorrect component installed	Correctly relocate the front wheel speed sensors
C200A-95	Rear axle wheel speed sensors swapped - incorrect assembly	Incorrect component installed	Correctly relocate the rear wheel speed sensors
U0100-87	Lost communication with ECM/PCM "A" - missing message	Missing message from the engine control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the engine control module for related stored DTCs
U0101-87	Lost communication with TCM - missing message	Missing message from the transmission control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the transmission control module for related stored DTCs
U0102-87	Lost communication with transfer case control module - missing message	Missing message from the transfer case control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the transfer case control module for related stored DTCs
U0104-87	Lost communication with cruise control module - missing message	Missing message from the adaptive cruise control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the adaptive cruise control module for related stored DTCs
U0126-87	Lost communication with steering angle sensor module - missing message	Missing message from the steering angle sensor module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the steering angle sensor module for related stored DTCs
U0128-87	Lost communication with park brake control module - missing message	Missing message from the park brake control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the park brake control module for related stored DTCs
U0132-87	Lost communication with ride level control module - missing message	Missing message from the air suspension control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the air suspension control module for related stored DTCs
U0133-87	Lost communication with active roll control module - missing message	Missing message from the dynamic response module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the dynamic response module for related stored DTCs
U0136-87	Lost communication with differential control module - rear - missing message	Missing message from the rear differential control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the rear differential control module for related stored DTCs
U0138-87	Lost communication with all terrain control module - missing message	Missing message from the terrain response control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the terrain response control module for related stored DTCs
U0155-87	Lost communication with instrument panel cluster (IPC) control module - missing message	Missing message from the instrument panel cluster control module	Refer to the electrical circuit diagrams and check the power, ground and CAN bus connections to the module. Using the manufacturer approved diagnostic system, complete a CAN network integrity test. Check the instrument panel cluster control module for related stored DTCs
U0401-68	Invalid data received from ECM/PCM - event information	Invalid data received from the engine control module	Using the manufacturer approved diagnostic system check the engine control module for related stored DTCs
U0402-68	Invalid data received from transmission control module - event information	Invalid data received from the transmission control module	Using the manufacturer approved diagnostic system check the transmission control module for related stored DTCs
U0403-68	Invalid data received from transfer case control module - event information	Invalid data received from the transfer case control module	Using the manufacturer approved diagnostic system check the transfer case control module for related stored DTCs
U0405-68	Invalid data received from cruise control module - event information	Invalid data received from the adaptive cruise control module	Using the manufacturer approved diagnostic system check the adaptive cruise control module for related stored DTCs
U0417-68	Invalid data received from park brake control module - event information	Invalid data received from the park brake control module	Using the manufacturer approved diagnostic system check the park brake control module for related stored DTCs
U0421-68	Invalid data received from ride level control module - event information	Invalid data received from the air suspension control module	Using the manufacturer approved diagnostic system check the air suspension control module for related stored DTCs
U0428-68	Invalid data received from steering angle sensor module - event information	Invalid data received from the steering angle sensor module	Using the manufacturer approved diagnostic system check the steering angle sensor module for related stored DTCs
U1A49-68	Invalid data received from all terrain control module - event information	Invalid data received from the terrain response control module	Using the manufacturer approved diagnostic system check the terrain response control module for related stored DTCs
U1A4A-68	Invalid data received from differential control module - rear - event information	Invalid data received from the rear differential control module	Using the manufacturer approved diagnostic system check the rear differential control module for related stored DTCs
U2001-68	Reduced system function - event information	NOTE: Not a fault condition. System operation suspended while system cools. Customer may have seen the warning lamp illuminated during a period of reduced functionality or may have noticed the vehicle behaving differently in relation to a traction control event Event information	NOTE: This DTC is stored if the control module reduces the level of functionality, to prevent over-heating of the foundation brakes. This is a normal function of the ECU and is not a fault Clear / ignore this DTC
U3000-55	Control module - not configured	Mismatch with master configure ID	Check the correct ABS module is installed to vehicle specification. Check that the Central Broadcast VIN matches the vehicle VIN. Refit the original module or replace as required