Anti-lock braking system
NOTE: If a module or component failure is suspected and the vehicle remains under manufacturer's warranty, refer to the Warranty Guide (Section B1.2) or determine if there is a previously approved special program in effect before replacing the component.
NOTE: Generic scan tools may not be able to read the codes listed or may only be able to read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the listed 7-digit code to identify the fault (the last 2 digits provide additional information readable by the manufacturer-approved diagnostic system).
NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) with three decimal places of accuracy and a valid calibration certificate. When testing resistance, be sure to include the resistance of the DMM leads.
NOTE: Before starting diagnostic programs using fault location tests, check and correct basic faults.
NOTE: Inspect the connectors for signs of water ingress and their pins for damage and/or corrosion.
NOTE: If DTCs are set and the fault is not present after performing the troubleshooting tests, an intermittent problem may be the cause. Be sure to check for loose connections and corroded terminals.
Description and operation
For a detailed description of the anti-lock brake system, refer to the relevant section "Description and Operation" of the workshop manual. For additional information, refer to the chapter: Anti-lock Braking System - Stability Assist Function (206-09C Anti-lock Braking System - Stability Assist Function, Description and Operation).
| DTC | Description | Possible reason | Action |
| B10DF-46 | Master Cylinder Shut-Off Valve | Valve not calibrated - Internal hydraulic control unit fault | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0001-01 | Brake master cylinder shut-off valve 1: electrical fault | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0002-01 | Brake master cylinder shut-off valve 2: electrical fault | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0003-01 | Low pressure feed valve 1: electrical fault | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0004-01 | Low pressure feed valve 2: electrical fault | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0010-01 | Front Left Inlet Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0011-01 | Front Left Exhaust Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0014-01 | Front Right Inlet Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0015-01 | Front Right Exhaust Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0018-01 | Rear Left Inlet Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0019-01 | Rear left exhaust valve control: general electrical fault | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C001C-01 | Rear Right Inlet Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C001D-01 | Rear Right Exhaust Valve Control: General Electrical Malfunction | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0020-01 | ABS Pump Motor Control: General Electrical Malfunction | Power supply to the electric motor pump: short circuit. Power supply to the electric motor pump: incorrect voltage. Electrical fault in the pump ground circuit. Mechanical fault in the pump | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new hydraulic control module. Refer to the new module/component installation note at the beginning of the DTC index |
| C0020-1C | ABS Pump Motor Control: Circuit Voltage Out of Range | Power supply to pump motor: short circuit, high resistance. Pump ground circuit fault. Internal hydraulic control unit fault | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new hydraulic control module. Refer to the new module/component installation note at the beginning of the DTC index |
| C0020-71 | ABS Pump Motor Control: Drive Jammed | Power supply to pump motor: short circuit, high resistance. Mechanical failure of the pump | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new hydraulic control module. Refer to the new module/component installation note at the beginning of the DTC index |
| C0030-07 | Front left wheel idler disc: mechanical failure | The bearing encoder is damaged | Install a new left front wheel hub bearing. For more information, refer to the chapter: Front Wheel Bearing (204-01 Front Suspension, Removal and Installation). |
| C0031-01 | Front Left Wheel Speed Sensor: General Electrical Malfunction | Wheel speed sensor electrical circuit: short to ground, short to battery (+), open circuit. Wheel speed sensor malfunction | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new wheel speed sensor if necessary. For additional information, refer to: Front Wheel Speed Sensor (206-09A Anti-Lock Brake System, Removal and Installation). |
| C0031-07 | Front left wheel speed sensor: mechanical failure | Faulty/incorrectly installed wheel speed sensor | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check that the sensor is installed correctly. Install a new wheel speed sensor if necessary. For additional information, refer to: Front Wheel Speed Sensor (206-09A Anti-Lock Brake System, Removal and Installation). |
| C0033-07 | Front right wheel idler disc: mechanical failure | The bearing encoder is damaged | Install a new right front wheel hub bearing. For more information, refer to the chapter: Front Wheel Bearing (204-01 Front Suspension, Removal and Installation). |
| C003401 | Front Right Wheel Speed Sensor: General Electrical Malfunction | Wheel speed sensor electrical circuit: short to ground, short to battery (+), open circuit. Wheel speed sensor malfunction | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new wheel speed sensor if necessary. For additional information, refer to: Front Wheel Speed Sensor (206-09A Anti-Lock Brake System, Removal and Installation). |
| C0034-07 | Front right wheel speed sensor: mechanical failure | Faulty/incorrectly installed wheel speed sensor | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check that the sensor is installed correctly. Install a new wheel speed sensor if necessary. For additional information, refer to: Front Wheel Speed Sensor (206-09A Anti-Lock Brake System, Removal and Installation). |
| C0036-07 | Rear left wheel idler disc: mechanical failure | The bearing encoder is damaged | Install a new left rear wheel hub bearing. For more information, refer to the chapter: Rear Wheel Bearing (204-02 Rear Suspension, Removal and Installation). |
| C0037-01 | Rear Left Wheel Speed Sensor: General Electrical Malfunction | Wheel speed sensor electrical circuit: short circuit to ground, short circuit to (+) battery, open circuit. Wheel speed sensor malfunction. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new wheel speed sensor if necessary. For additional information, refer to: Rear Wheel Speed Sensor (206-09A Anti-Lock Brake System, Removal and Installation). |
| C0037-07 | Rear left wheel speed sensor: mechanical failure | Faulty/incorrectly installed wheel speed sensor | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check that the sensor is installed correctly. Install a new wheel speed sensor if necessary. For additional information, refer to: Rear Wheel Speed Sensor (206-09A Anti-Lock Braking System, Removal and Installation). |
| C003907 | Rear right wheel idler disc: mechanical failure | The bearing encoder is damaged | Install a new right rear wheel hub bearing. For more information, refer to the chapter: Rear Wheel Bearing (204-02 Rear Suspension, Removal and Installation). |
| C003A-01 | Rear Left Wheel Speed Sensor: General Electrical Malfunction | Wheel speed sensor electrical circuit: short circuit to ground, short circuit to (+) battery, open circuit. Wheel speed sensor malfunction. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new wheel speed sensor if necessary. For additional information, refer to: Rear Wheel Speed Sensor (206-09A Anti-Lock Brake System, Removal and Installation). |
| C003A-07 | Rear right wheel speed sensor: mechanical failure | Faulty/incorrectly installed wheel speed sensor | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check that the sensor is installed correctly. Install a new wheel speed sensor if necessary. For additional information, refer to: Rear Wheel Speed Sensor (206-09A Anti-Lock Braking System, Removal and Installation). |
| C0040-64 | Brake Pedal Position Sensor "A": Invalid Signal | Brake Pedal Position Sensor Circuit: Short to Ground, Short to Power, Open. Brake Pedal Position Sensor Malfunction | Perform the fault isolation test associated with this DTC using the manufacturer approved diagnostic system. Install a new brake switch if necessary. For additional information, refer to: Speed Control Deactivator Switch (310-03B Speed Control - 2.2L Duratorq - Td4, Removal and Installation). |
| C0044-01 | TMC Pressure Sensor: General Electrical Malfunction | NOTE: The sensor is built into the control unit. Sensor malfunction. | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0044-28 | TMC Pressure Sensor: Signal Offset | NOTE: The sensor is built into the control unit. Sensor malfunction | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0044-64 | TMC Pressure Sensor: Signal Reliability | NOTE: The sensor is built into the control unit. Sensor malfunction. | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0051-28 | Steering wheel rotation sensor: control of coordination | Loose/incorrectly installed sensor. Incorrect vehicle track adjustment. | Check for proper installation/adjustment of sensor and pulse wheel. Check steering and suspension for damage/wear that may affect alignment, make necessary repairs. |
| C0061-01 | Lateral acceleration sensor: general electrical fault | Sensor circuit: short to ground/power, open circuit. Internal sensor fault. | Perform the fault isolation test associated with this DTC using the manufacturer approved diagnostic system. Install a new sensor and recalibrate it if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Yaw Control Function, Removal and Installation). |
| C0061-28 | Lateral Acceleration Sensor: Sensor Signal Offset Level Out of Range/Zero Setting Error | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the lateral acceleration sensor. |
| C0061-64 | Lateral acceleration sensor: invalid signal | Internal fault in lateral acceleration sensor | If necessary, install a new sensor and recalibrate it. For more information, refer to the chapter: Acceleration Sensor (206-09C Anti-lock Braking System - Yaw Control Function, Removal and Installation). |
| C0062-01 | Longitudinal acceleration sensor: general electrical fault | Sensor circuit: short to ground/power, open circuit. Internal sensor fault. | Perform the fault isolation test associated with this DTC using the manufacturer approved diagnostic system. Install a new sensor and recalibrate it if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Yaw Control Function, Removal and Installation). |
| C0062-28 | Longitudinal Acceleration Sensor: Sensor Signal Offset Level Out of Range/Zero Setting Error | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the longitudinal acceleration sensor. |
| C0062-64 | Longitudinal acceleration sensor: invalid signal | Internal fault in longitudinal acceleration sensor | If necessary, install a new sensor and recalibrate it. For more information, refer to the chapter: Acceleration Sensor (206-09C Anti-lock Braking System - Yaw Control Function, Removal and Installation). |
| C0063-01 | Yaw Rate Sensor: General Electrical Malfunction | Vertical axis rotation sensor circuit: ground/supply circuit short circuit, circuit break. Internal malfunction of the rotation value sensor around the vertical axis. | Refer to the electrical diagrams to check the yaw rate circuit for a short to ground, short to power, or open circuit. Install a new sensor and recalibrate it if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Yaw Control Function, Removal and Installation). |
| C0063-28 | Vertical axis rotation value sensor: level of sensor signal displacement beyond the permissible range / zero setting error | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the yaw rate sensor. |
| C0063-64 | Yaw Rate Sensor: Invalid Signal | Internal fault in the yaw rate sensor | If necessary, install a new sensor and calibrate it. For more information, refer to the chapter: Acceleration Sensor (206-09C Anti-lock Braking System - Yaw Control Function, Removal and Installation). |
| C0064-01 | General Roll Rate Sensor Malfunction Information: General Electrical Malfunction | Roll sensor circuit: short to ground/power, open circuit. Internal fault in the roll sensor. | Refer to the electrical circuit diagrams to check the steering stiffness sensor circuit for a short to ground, short to power, or open circuit. Install a new sensor and recalibrate it if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Steering Stability Control, Removal and Installation). |
| C0064-28 | General Roll Rate Sensor Signal Faults: Misalignment | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the accelerometer sensor and pressure sensor |
| C0064-64 | Roll Rate Sensor Algorithm Error: Invalid Signal | Internal fault in the roll sensor | If necessary, install a new sensor and calibrate it. For more information, refer to the chapter: Acceleration Sensor (206-09C Anti-lock Braking System - Yaw Control Function, Removal and Installation). |
| C006A-01 | Multi-axis acceleration sensor: general electrical fault | Multi-axis acceleration sensor circuit: short to ground/power, open circuit. Internal fault in the multi-axis acceleration sensor. | Refer to the electrical diagrams to check the multi-axis acceleration sensor circuit for a short to ground, short to power, or open circuit. Install a new sensor and recalibrate it if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Yaw Control Function, Removal and Installation). |
| C006A-04 | Multi-axis acceleration sensor: internal system failure | Internal failure of the multi-axis acceleration sensor | If necessary, install a new sensor and calibrate it. For more information, refer to the chapter: Acceleration Sensor (206-09C Anti-lock Braking System - Yaw Control Function, Removal and Installation). |
| C006A-16 | Multi-axis acceleration sensor: voltage in circuit below threshold | Sensor power supply circuit: short circuit to ground, open circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| C006A-17 | Multi-axis acceleration sensor: voltage in circuit above threshold | Sensor power supply circuit: short circuit to power supply circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| C006A-47 | Multi-axis acceleration sensor: watchdog controller error | Internal failure of the multi-axis acceleration sensor | If necessary, install a new sensor and calibrate it. For more information, refer to the chapter: Acceleration Sensor (206-09C Anti-lock Braking System - Yaw Control Function, Removal and Installation). |
| C006B-00 | Stabilization system active too long: no subtype information | Software validity error while driving | Check the wheel and tire sizes. Check if the steering wheel rotation sensor is out of alignment and if the wheel bearing position sensors are damaged. |
| C0082-47 | Brake system malfunction indicator: internal electronic equipment malfunction (Watchdog_Fault) | Internal differences in software | Clear the DTC and check to see if it resets. If the DTC resets, install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0082-48 | Brake system malfunction indicator: internal electronic equipment malfunction (SW-Fault) | Internal differences in software | Clear the DTC and check to see if it resets. If the DTC resets, install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0082-49 | Brake system malfunction indicator: internal electronic equipment malfunction (HW-Fault) | Internal failure of the hydraulic control unit | Install a new hydraulic control module, refer to the new module/component installation note at the top of the DTC index. |
| C0082-54 | ESP sensor: checking the correction | Calibration failure | Calibrate the sensor unit using the manufacturer approved diagnostic system. |
| C1108-01 | Sensor supply voltage failure | 5V sensor power supply failure | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| C1109-64 | Dynamic Stability Control (DSC) Switch Algorithm Malfunction: Invalid Signal | The DSC switch is stuck or faulty | Check the integrity of the dynamic stabilization system switch and install a new switch if necessary. |
| U0001-00 | High Speed CAN Communication Bus General Malfunction Information: No Subtype Information | Isolated CAN bus communication error. CAN circuit malfunction. | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| U0100-00 | General fault information - Lost communication with engine control unit: no subtype information | Isolated CAN bus communication error. CAN circuit malfunction. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check the engine control module for DTCs and refer to the appropriate DTC index. For additional information, refer to the chapter: Electronic Controls (303-14A Electronic Controls - 3.2L NA - I6, Diagnostics and Testing). |
| U0125-00 | General fault information - no communication with multi-axis acceleration sensor unit: no subtype information | Local CAN network electrical circuit malfunction. Sensor malfunction. | Perform the fault isolation test associated with this DTC using the manufacturer approved diagnostic system. Install a new sensor if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Yaw Control Function, Removal and Installation). |
| U0125-88 | No communication with the multi-axis acceleration sensor unit - signal/message failure on the bus: the bus is off | Local CAN network electrical circuit malfunction. Sensor malfunction. | Perform the fault isolation test associated with this DTC using the manufacturer approved diagnostic system. Install a new sensor if necessary. For additional information, refer to: Acceleration Sensor (206-09C Anti-lock Brake System - Yaw Control Function, Removal and Installation). |
| U0126-00 | General fault information - no communication with steering wheel speed sensor unit: no subtype information | Isolated CAN bus communication error. CAN circuit malfunction. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check the steering wheel sensor module for DTCs and refer to the appropriate DTC index |
| U0136-00 | Clutch disengagement by time via CAN | There are no CAN signals from the Haldex module. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Check the Haldex unit for DTCs and refer to the appropriate DTC index |
| U0300-00 | Internal control unit software incompatibility | Invalid configuration message received | Configure the central junction box using the manufacturer approved diagnostic system. Clear the DTCs and retest. If the DTC is still logged, the HCU may be faulty; refer to the new module/component installation note at the beginning of the DTC index |
| U0422-68 | Invalid data received from body control unit: event information | Incorrect signals from the central distribution box | Check the CJB for DTCs and refer to the appropriate DTC index |
| U0428-00 | Invalid data received from steering angle sensor - general fault information: no subtype information | Invalid data received from steering wheel angle sensor module | Check the steering wheel angle sensor module for DTCs and refer to the appropriate DTC index |
| U0428-41 | Invalid data received from steering angle sensor - internal system faults: general checksum error | Steering wheel angle sensor signal checksum mismatch | Check the steering wheel angle sensor module for DTCs and refer to the appropriate DTC index |
| U0428-61 | Incorrect data received from steering wheel angle sensor - algorithm failures: signal calculation error | Incorrect data received from steering wheel angle sensor | Check the steering wheel angle sensor module for DTCs and refer to the appropriate DTC index |
| U0428-62 | Incorrect data received from steering wheel angle sensor - algorithm failures: signal matching error | Steering wheel angle sensor is installed incorrectly. Yaw value sensor calibration. Internal fault in steering wheel angle sensor module. | Check the steering wheel angle sensor for proper installation. Check the yaw rate sensor. Check the yaw rate sensor calibration using the manufacturer approved diagnostic system. Install a new steering wheel angle sensor module. For additional information, refer to: Clock Spring (501-20B Secondary Restraint System, Removal and Installation). |
| U0428-64 | Incorrect data received from steering wheel angle sensor - algorithm failures: invalid signal | Incorrect front wheel alignment angles. Steering wheel angle sensor is damaged. | Check and adjust the front wheel alignment. For additional information, refer to the chapter: Specifications (204-00 Suspension - General Information, Specifications). If necessary, install a new steering wheel angle sensor, refer to the note on installing a new unit/component at the beginning of the DTC index. For additional information, refer to the chapter: Clock Spring (501-20B Secondary Restraint System, Removal and Installation). |
| U1A13-87 | Timed shutdown: All Terrain mode control unit message | Terrain Response Optimization Switch Circuit: Short to Ground/Power, Open Circuit. Terrain Response Switch Malfunction. | Refer to the electrical circuit diagrams and check the Terrain Response switch circuits for short to ground/power and open circuit. Install a new Terrain Response switch if necessary. For additional information, refer to: Suspension and Handling Optimization Switch (204-06 Suspension and Handling Optimization, Removal and Installation). |
| U1A14-00 | CAN initialization failure - general fault information: no subtype information available | Volcano initialization failed | Perform CAN network integrity tests using the manufacturer approved diagnostic system. |
| U1A49-68 | Signal failure: All Terrain Mode Control Unit message | Terrain Response Switch Software Error | Clear the DTC and retest; if the DTC is still logged, install a new Terrain Response switch if necessary. For more information, refer to: Suspension and Handling Optimization Switch (204-06 Suspension and Handling Optimization, Removal and Installation). |
| U2007-46 | Internal valve system faults: calibration/parameter memory failure | No intake valve calibration data found in EEPROM: Non-volatile memory failure | Install a new hydraulic control module. See the note on installing a new module/component at the beginning of the DTC index |
| U2100-00 | Control unit not configured - general fault information: no subtype information | Vehicle configuration data not received | Check for DTCs for the CJB and refer to the DTC index, then retest. If the DTC is still logged, reset the CJB using the manufacturer approved diagnostic system |
| U2101-00 | Incompatible control unit configuration - general fault information: no subtype information | The hydraulic control unit/central distribution box was previously installed on another vehicle. Incorrect vehicle configuration file data. | Install a new or genuine HCU/CJB, see the note on installing a new module/component at the beginning of the DTC index. Check/correct the vehicle configuration file using the manufacturer approved diagnostic system |
| U3003-16 | Low battery voltage | Hydraulic control unit power supply circuit(s) | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| U3003-17 | High battery voltage | Hydraulic control unit power supply circuit(s). Charging system faults. | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| U3003-62 | Battery voltage signal comparison failure | Battery voltage difference of 2V or more between hydraulic control unit and central junction box | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
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