Anti-lock braking system
NOTE: If a unit or component is likely to fail and the vehicle is still under manufacturer's warranty, refer to the warranty manual before replacing the component (section B1.2) or determine if there is any previously approved special program in operation.
NOTE: Universal Scan Tools may not read the listed codes or may only read 5-digit codes. Match the 5 digits from the scan tool with the first 5 digits of the 7-digit code listed to identify the problem (the last 2 digits give additional information read by the diagnostic system approved by the manufacturer).
NOTE: Always use a digital multimeter when performing voltage or resistance tests (DMM) accurate to three decimal places and with a valid calibration certificate. When testing resistance, be sure to consider the resistance of the DMM leads.
NOTE: Before starting diagnostic programs using troubleshooting tests, check and correct major problems.
NOTE: Inspect the connectors for signs of water intrusion and their pins for damage and (or) traces of corrosion.
NOTE: If DTCs are logged and there is no problem after performing troubleshooting tests, an intermittent problem may be the cause. Be sure to check for loose connections and corroded contacts.
Description and operation
For a detailed description of the anti-lock brake system, see the relevant section «Description and operation» repair manuals. For more information, please refer to the chapter: Anti-Lock Braking System - Heading Stability Function (206-09C Anti-Lock Braking System - Heading Stability Function, Description and Operation).
| DTC | Description | Possible reason | Action |
| B10DF-46 | Shut-off valve of the main brake cylinder | Valve not calibrated - Hydraulic control unit internal fault | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0001-01 | Shut-off valve 1 of the brake master cylinder: electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0002-01 | Shut-off valve 2 of the brake master cylinder: electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0003-01 | Low pressure feed valve 1: electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0004-01 | Low pressure feed valve 2: electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0010-01 | Front left intake valve control - general electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0011-01 | Front Left Exhaust Valve Control General Electrical Fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0014-01 | Front right inlet valve control - general electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0015-01 | Front Right Exhaust Valve Control General Electrical Fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0018-01 | Rear left inlet valve control - general electrical fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0019-01 | Rear Left Exhaust Valve Control General Electrical Fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C001C-01 | Rear Right Intake Valve Control General Electrical Fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C001D-01 | Rear Right Exhaust Valve Control General Electrical Fault | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0020-01 | ABS pump motor control - general electrical fault | Power supply to motor pump: short circuit. Power supply to motor pump: wrong voltage. Malfunction of the electrical ground circuit of the pump. Pump mechanical failure | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new hydraulic control unit. See the new unit/component installation note at the beginning of the DTC index |
| C0020-1C | ABS pump motor control circuit voltage out of range | Power supply to the pump motor: short circuit, high resistance. Malfunction of the electrical ground circuit of the pump. Internal malfunction of the hydraulic control unit | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new hydraulic control unit. See the new unit/component installation note at the beginning of the DTC index |
| C0020-71 | ABS pump motor control: Drive stuck | Power supply to the pump motor: short circuit, high resistance. Pump mechanical failure | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new hydraulic control unit. See the new unit/component installation note at the beginning of the DTC index |
| C0030-07 | Front left wheel impulse disk: mechanical failure | Bearing encoder damaged | Install a new left front wheel bearing. For more information, see chapter: Front wheel bearing (204-01 Front suspension, Removal and installation). |
| C0031-01 | Front Left Wheel Speed Sensor General Electrical Fault | Wheel speed sensor 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 more information, refer to the chapter: Front wheel speed sensor (206-09A Anti-lock braking 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 if the sensor is installed correctly. Install a new wheel speed sensor if necessary. For more information, refer to the chapter: Front wheel speed sensor (206-09A Anti-lock braking system, Removal and installation). |
| C0033-07 | Front right wheel impulse disk: mechanical failure | Bearing encoder damaged | Install a new right front wheel bearing. For more information, see chapter: Front wheel bearing (204-01 Front suspension, Removal and installation). |
| C003401 | Front Right Wheel Speed Sensor General Electrical Fault | Wheel speed sensor 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 more information, refer to the chapter: Front wheel speed sensor (206-09A Anti-lock braking 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 if the sensor is installed correctly. Install a new wheel speed sensor if necessary. For more information, refer to the chapter: Front wheel speed sensor (206-09A Anti-lock braking system, Removal and installation). |
| C0036-07 | Rear left wheel impulse disk: mechanical failure | Bearing encoder damaged | Install a new left rear wheel bearing. For more information, see chapter: Rear wheel bearing (204-02 Rear suspension, Removal and installation). |
| C0037-01 | Rear Left Wheel Speed Sensor General Electrical Fault | Wheel speed sensor 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 more information, refer to the chapter: Rear wheel speed sensor (206-09A Anti-lock braking 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 if the sensor is installed correctly. Install a new wheel speed sensor if necessary. For more information, refer to the chapter: Rear wheel speed sensor (206-09A Anti-lock braking system, Removal and installation). |
| C003907 | Rear Right Wheel Impulse Drive: Mechanical Failure | Bearing encoder damaged | Install a new right rear wheel bearing. For more information, see chapter: Rear wheel bearing (204-02 Rear suspension, Removal and installation). |
| C003A-01 | Rear Left Wheel Speed Sensor General Electrical Fault | Wheel speed sensor 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 more information, refer to the chapter: Rear wheel speed sensor (206-09A Anti-lock braking 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 if the sensor is installed correctly. Install a new wheel speed sensor if necessary. For more information, refer to the chapter: Rear wheel speed sensor (206-09A Anti-lock braking system, Removal and installation). |
| C0040-64 | Sensor "A" brake pedal position: implausible signal | Brake pedal position sensor circuit short to ground, short to power, open. Brake Pedal Position Sensor Malfunction | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new brake switch if necessary. For more information, see chapter: Speed Control Deactivator Switch (310-03B Speed control - 2.2L Duratorq - Td4, Removal and installation). |
| C0044-01 | TMC Pressure Sensor General Electrical Fault | NOTE: The sensor is built into the control box. Sensor failure. | Install a new hydraulic control unit, refer to the new unit/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 box. Sensor failure | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0044-64 | TMC pressure sensor: signal validity | NOTE: The sensor is built into the control box. Sensor failure. | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0051-28 | Steering wheel rotation sensor: coordination control | Loose/incorrectly installed sensor. Incorrect vehicle track adjustment. | Check the correct installation/adjustment of the sensor and the impulse wheel. Check steering and suspension for damage/wear that could affect toe-in and make any necessary repairs. |
| C0061-01 | Lateral acceleration sensor general electrical fault | Sensor circuit: short to ground/power, open circuit. Internal sensor failure. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C0061-28 | Lateral Acceleration Sensor: Sensor Offset Level Out of Range/Zero Error | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the lateral acceleration sensor. |
| C0061-64 | Lateral acceleration sensor: implausible signal | Internal malfunction of the lateral acceleration sensor | If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C0062-01 | Longitudinal acceleration sensor general electrical fault | Sensor circuit: short to ground/power, open circuit. Internal sensor failure. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability 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: implausible signal | Longitudinal acceleration sensor internal fault | If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C0063-01 | Yield Sensor - General Electrical Fault | Yield sensor circuit: short to ground/power circuit, open circuit. Internal malfunction of the yaw rate sensor. | Refer to the wiring diagrams to check the yaw rate circuit for a short to ground, short to power, or open circuit. If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C0063-28 | Sensor of the magnitude of rotation around the vertical axis: the level of displacement of the sensor signal beyond the limits of the permissible range/zero setting error | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the yaw rate sensor. |
| C0063-64 | Yield sensor: implausible signal | Internal malfunction of the yaw rate sensor | If necessary, install a new sensor and calibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C0064-01 | Roll Rate Sensor General Fault Details: General Electrical Fault | Tilt sensor circuit short to ground/power, open circuit. Roll sensor internal fault. | Refer to the wiring diagrams to check the suspension stiffness sensor circuit for a short to ground, short to power, or open circuit. If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C0064-28 | General Roll Rate Sensor Signal Failures: Mismatch | Incorrectly calibrated sensor | Using the manufacturer approved diagnostic system, calibrate the accelerometer sensor and pressure sensor |
| C0064-64 | Roll Rate Sensor Algorithm Failures: Invalid Signal | Roll sensor internal fault | If necessary, install a new sensor and calibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C006A-01 | Multi-axis acceleration sensor - general electrical fault | Multi-axis acceleration sensor circuit - short to ground / power circuit, open circuit. Internal malfunction of the multi-axis acceleration sensor. | Refer to the wiring diagrams to check the multi-axis acceleration sensor circuit for a short to ground, short to power, or open circuit. If necessary, install a new sensor and recalibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C006A-04 | Multi-axis acceleration sensor: internal system malfunction | Multi-axis acceleration sensor internal fault | If necessary, install a new sensor and calibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C006A-16 | Multi-axis Acceleration Sensor Circuit Voltage Below Threshold | Sensor power circuit: short to ground, open circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| C006A-17 | Multi-axis Acceleration Sensor Circuit Voltage Above Threshold | Sensor power circuit - short circuit to power circuit | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| C006A-47 | Multi-axis acceleration sensor: watchdog error | Multi-axis acceleration sensor internal fault | If necessary, install a new sensor and calibrate it. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| C006B-00 | Stabilization system active too long: no subtype information | Software plausibility error while driving | Check wheel and tire sizes. Check if the steering wheel rotation sensor is misaligned or the wheel bearing position sensors are damaged. |
| C0082-47 | Brake warning light: internal electronic fault (Watchdog_Fault) | Internal software difference | Clear the DTC and see if it has re-logged. If the DTC is logged again, install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0082-48 | Brake warning light: internal electronic fault (SW-Fault) | Internal software difference | Clear the DTC and see if it has re-logged. If the DTC is stored again, install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0082-49 | Brake warning light: internal electronic fault (HW-Fault) | Internal malfunction of the hydraulic control unit | Install a new hydraulic control unit, refer to the new unit/component installation note at the top of the DTC index. |
| C0082-54 | ESP sensor: correction check | Calibration failure | Calibrate the sensor block using the manufacturer approved diagnostic system. |
| C1108-01 | Sensor supply voltage failure | 5V sensor power failure | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| C1109-64 | Dynamic stabilization switch algorithm failures (DSC): invalid signal | DSC switch stuck or defective | Check the stability of the stability control switch and install a new switch if necessary. |
| U0001-00 | High-Speed CAN Communication Bus General Fault Information: No subtype information | Single CAN bus communication error. CAN circuit malfunction. | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| U0100-00 | General information about the malfunction - loss of communication with the engine control unit: no information on the subtype | Single 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 more information, see the chapter: Electronic controls (303-14A Electronic controls - 3.2L NA - I6, Diagnostics and checks). |
| U0125-00 | General Fault Details - No Communication with Multi-Axis Acceleration Sensor Unit: No Sub Type Information | Malfunction of the electrical circuit of the local network CAN. Sensor failure. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new sensor if necessary. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| U0125-88 | No Communication with Multi-Axis Acceleration Sensor Unit - Bus Signal/Communication Failed: Bus Off | Malfunction of the electrical circuit of the local network CAN. Sensor failure. | Perform the troubleshooting test associated with this DTC using the manufacturer approved diagnostic system. Install a new sensor if necessary. For more information, please refer to the chapter: Acceleration Sensor (206-09C Anti-lock braking system - Course stability function, Removal and installation). |
| U0126-00 | General Fault Details - No Communication with Steering Wheel Sensor Unit: No Sub Type Information | Single 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 angle sensor module for DTCs and refer to the appropriate DTC index |
| U0136-00 | Timed clutch disengagement via CAN | No CAN signals from 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 relevant DTC index |
| U0300-00 | Internal control unit software incompatibility | Invalid configuration message received | Configure the central junction box using the manufacturer's approved diagnostic system. Clear the DTCs and recheck. If the DTC is still set, the HCU may be faulty; refer to the new unit/component installation note at the beginning of the DTC index |
| U0422-68 | Invalid data received from body control module: event information | Incorrect signals from the central junction 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 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 Rotation Sensor Checksum Mismatch | Check the steering wheel angle sensor module for DTCs and refer to the appropriate DTC index |
| U0428-61 | Incorrect data received from the steering angle sensor - algorithm failures: signal calculation error | Incorrect data received from the steering wheel sensor | Check the steering wheel angle sensor module for DTCs and refer to the appropriate DTC index |
| U0428-62 | Steering Angle Sensor Invalid Data Received - Algorithm Failures: Signal Mapping Error | Steering wheel sensor installed incorrectly. Calibration of the yaw rate sensor. Steering wheel rotation sensor module internal fault. | Check that the steering wheel sensor is installed correctly. Check the yaw rate sensor. Check the yaw rate sensor calibration using the manufacturer approved diagnostic system. Install a new steering wheel sensor module. For more information, see the chapter: Clock spring (501-20B Secondary restraint system, Removal and installation). |
| U0428-64 | Incorrect data received from the steering angle sensor - algorithm failures: invalid signal | Incorrect front wheel alignment. Damaged steering wheel sensor. | Check and adjust the geometry of the front wheels. For more information, please refer to the chapter: Specifications (204-00 Suspension - General Information, Specifications). Install a new steering wheel sensor if necessary, refer to the new unit/component installation note at the beginning of the DTC index. For more information, see the chapter: Clock spring (501-20B Secondary restraint system, Removal and installation). |
| U1A13-87 | Timed Off: All Terrain ECM Message | Terrain Response System Optimization Switch Circuit - Short to ground/power, open circuit. Terrain Response switch failure. | Refer to electrical circuit diagrams and check Terrain Response system switch circuits for short to ground/power and open circuit. Install a new Terrain Response switch if necessary. For more information, please refer to the chapter: Suspension and handling performance optimization switch (204-06 Optimization of vehicle suspension and handling characteristics, Removal and installation). |
| U1A14-00 | CAN Initialization Failed - General Fault Details: No Subtype Information | Volcano initialization failure | Perform CAN network integrity checks using the manufacturer's approved diagnostic system. |
| U1A49-68 | Signal Failure: All Terrain ECM Message | Terrain Response switch software error | Clear the DTC and recheck; if the DTC is still set, install a new Terrain Response switch as needed. For more information, please refer to the chapter: Suspension and handling performance optimization switch (204-06 Optimization of vehicle suspension and handling characteristics, Removal and installation). |
| U2007-46 | Valve system internal faults: calibration/parameter memory failure | No intake valve calibration data found in EEPROM: NVRAM failure | Install a new hydraulic control unit. See the new unit/component installation note 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 CJB DTCs and refer to the DTC index, then recheck. If the DTC is still logged, reconfigure 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 junction box has been previously installed on another vehicle. Invalid vehicle configuration file data. | Install a new or original HCU/CJB, see the new module/component installation note at the beginning of the DTC index. Check/correct vehicle configuration file using manufacturer approved diagnostic system |
| U3003-16 | Low battery voltage | Electrical circuit (And) hydraulic control unit supply | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| U3003-17 | High battery voltage | Electrical circuit (And) power supply of the hydraulic control unit. Charging system malfunctions. | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
| U3003-62 | Battery voltage signal compare failure | Battery voltage difference of 2 V or more between the hydraulic control unit and the central junction box | Perform the troubleshooting tests associated with this DTC using the manufacturer approved diagnostic system |
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