C-codes
Chassis codes (C0xxx)
ABS, traction control, brake and stability electronics.
Powertrain codes (P0xxx)
Engine, fuel, ignition and emissions faults — the most common diagnostic trouble codes.
Chassis codes (C0xxx)ABS, traction control, brake and stability electronics.
Body codes (B0xxx)Airbags (SRS), climate control, lights and body modules.
Network codes (U0xxx)Communication faults between modules over the CAN bus.
| Code | Meaning | System |
|---|---|---|
| C0035 | Left front wheel speed sensor circuit malfunction | Brakes / ABS |
| C0040 | Right front wheel speed sensor circuit malfunction | Brakes / ABS |
| C0041 | Right front wheel speed sensor range / performance | Brakes / ABS |
| C0042 | Left front wheel speed sensor circuit short | Brakes / ABS |
| C0045 | Left rear wheel speed sensor circuit malfunction | Brakes / ABS |
| C0050 | Right rear wheel speed sensor circuit malfunction | Brakes / ABS |
| C0051 | Right rear wheel speed sensor range / performance | Brakes / ABS |
| C0121 | ABS valve / solenoid relay malfunction | Brakes / ABS |
| C0131 | Brake fluid pressure sensor circuit malfunction | Brakes |
| C0221 | Right front wheel speed sensor signal missing | Brakes / ABS |
| C0277 | ABS pump motor circuit malfunction | Brakes / ABS |
| C0300 | Rear wheel speed signal error | Brakes / ABS |
| C0460 | Steering angle sensor circuit malfunction | Steering |
| C0550 | ABS control unit internal fault | ABS |
| C0561 | ABS system voltage out of range | ABS |
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