Vehicle Dynamic Systems

ABS MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Source	Perform Test
B1342	ECU is Defective	ABS Module	NOTE: If other DTCs are present, REPAIR them before installing a new component. CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new module. REFER to Anti-Lock Brake System (ABS) Module . REPEAT the self-test.
B1483	Brake Pedal Input Circuit Failure	ABS Module	Go to Pinpoint Test A .
B1676	Battery Pack Voltage Out of Range	ABS Module	Go to Pinpoint Test B .
B2477	Module Configuration Failure	ABS Module	RECONFIGURE the ABS module. REFER to Programmable Module Installation in MODULE CONFIGURATION and follow the scan tool directions for the configuration procedure. CLEAR the DTC. REPEAT the self-test. If DTC B2477 returns, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module .
B2741	Sensor Cluster is Defective	ABS Module	Go to Pinpoint Test G .
B2900	VIN Mismatched (normally set when a new ABS module is installed)	ABS Module	VERIFY that the module has the correct as-built data. CHECK for correct PCM configuration using the scan tool. CONFIGURE the component as necessary. REFER to Programmable Module Installation in MODULE CONFIGURATION and follow the scan tool directions for the configuration procedure. CLEAR the DTC. REPEAT the self-test.
C1095	ABS Hydraulic Pump Motor Circuit Failure	ABS Module	Go to Pinpoint Test C .
C1145	Wheel Speed Sensor RF Input Circuit Failure	ABS Module	Go to Pinpoint Test D .
C1155	Wheel Speed Sensor LF Input Circuit Failure	ABS Module	Go to Pinpoint Test D .
C1165	Wheel Speed Sensor RR Input Circuit Failure	ABS Module	Go to Pinpoint Test D .
C1175	Wheel Speed Sensor LR Input Circuit Failure	ABS Module	Go to Pinpoint Test D .
C1233	Wheel Speed LF Input Signal Missing	ABS Module	Go to Pinpoint Test E .
C1234	Wheel Speed RF Input Signal Missing	ABS Module	Go to Pinpoint Test E .
C1235	Wheel Speed RR Input Signal Missing	ABS Module	Go to Pinpoint Test E .
C1236	Wheel Speed LR Input Signal Missing	ABS Module	Go to Pinpoint Test E .
C1277	Steering Wheel Angle 1 and 2 Circuit Failure	ABS Module	Go to Pinpoint Test F .
C1278	Steering Wheel Angle 1 and 2 Signal Faulted	ABS Module	Go to Pinpoint Test F .
C1279	Yaw Rate Sensor Circuit Failure	ABS Module	Go to Pinpoint Test G .
C1280	Yaw Rate Sensor Signal Fault	ABS Module	Go to Pinpoint Test G .
C1281	Lateral Accelerometer Circuit Failure	ABS Module	Go to Pinpoint Test G .
C1282	Lateral Accelerometer Signal Fault	ABS Module	Go to Pinpoint Test G .
C1285	Booster Solenoid Circuit Failure	ABS Module	Go to Pinpoint Test H .
C1287	Booster Pedal Force Switch Circuit Failure	ABS Module	Go to Pinpoint Test I .
C1288	Brake Pressure Transducer Input Circuit Failure	ABS Module	CLEAR the DTCs. REPEAT the self-test. If DTC C1287 is present, make sure all hydraulic control unit (HCU) and ABS module fasteners are tightened to their correct torque specification. If all fasteners are tightened to their correct torque specification, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module .
C1440	Pressure Transducer Input Circuit Failure	ABS Module	CLEAR the DTCs. REPEAT the self-test. If DTC C1287 is present, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module .
C1470	TCS Function Temperature Disabled (the brake fluid temperature is above a pre-set limit)	ABS Module	CLEAR the DTC. ALLOW the fluid time to cool. VERIFY ABS operation.
C1516	Roll Rate Signal Fault	ABS Module	Go to Pinpoint Test G .
C1517	Roll Rate Sensor Circuit Fault	ABS Module	Go to Pinpoint Test G .
C1805	Mismatched PCM and/or ABS Module	ABS Module	CHECK for correct PCM and ABS module configurations using the scan tool. CONFIGURE the component as necessary. REFER to Programmable Module Installation in MODULE CONFIGURATION and follow the scan tool directions for the configuration procedure. CLEAR the DTC. REPEAT the self-test.
C1963	Stability Control Inhibit Warning	ABS Module	NOTE: This DTC will not clear until the vehicle has been driven above 48 km/h (30 mph) with input from the steering wheel rotation sensor. REPAIR all other DTCs before repairing DTC C1963.INSPECT the steering wheel rotation sensor and tone ring for damage and correct installation. REINSTALL or INSTALL new as necessary. If the sensor and tone ring are OK, go to Pinpoint Test F .
C1991	Module Calibration Failure	ABS Module	CLEAR the DTC. REPEAT the self-test. If DTC C1991 is present, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module .
C1996	Active Yaw Control Disabled	ABS Module	This DTC is set if the stability assist system is activated for 15 seconds of continuous operation. CHECK for any major chassis modifications, gross suspension misalignment or other items that can alter the vehicle tracking dynamics. CLEAR the DTC. REPEAT the self-test.
C2769	Longitudinal Acceleration Sensor Circuit Failure	ABS Module	Go to Pinpoint Test G .
C2770	Longitudinal Acceleration Sensor Signal Fault	ABS Module	Go to Pinpoint Test G .
C2777	Sensor Cluster Bus Failure	ABS Module	Go to Pinpoint Test G .
C2778	Sensor Cluster Power Supply Failure	ABS Module	Go to Pinpoint Test G .
U1900	CAN Communication Bus Fault-Receive Error	Network Fault	REFER to MODULE COMMUNICATIONS NETWORK to diagnose the high-speed controller area network (HS-CAN) bus.
U1901	CAN Network #2 Communication Bus Fault-Receive Error	Network Fault	Go to Pinpoint Test G .
U2023	Fault Received From External Node	Network Fault	REFER to MODULE COMMUNICATIONS NETWORK to diagnose the HS-CAN bus.
U2050	No Application Present	ABS Module	CONFIGURE the ABS module. REFER to Programmable Module Installation in MODULE CONFIGURATION and follow the scan tool directions for the configuration procedure. CLEAR the DTCs. RETRIEVE the DTCs and VERIFY successful module configuration. If DTC U2050 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . CLEAR the DTC. REPEAT the self-test.