OBD2 code C0634: Parking brake system
Parking brake fault.
Detected Root Component
Chassis Component
Observed Symptoms
- ABS light on
- ESP/ESC light on
Possible Causes
- Defective sensor
- Damaged wiring
- Faulty mixing flap actuator
- Blown fuse
Tools Required
Interactive Diagnostic
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Parts likely to be the cause (Capteur ABS)
Capteur ABS
Photo d'illustration : Capteur ABS
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Frequently asked questions about code C0634
What does code C0634 mean? ▾
OBD2 code C0634: Parking brake system. Parking brake fault.
What are the symptoms of code C0634? ▾
Code C0634 may cause: ABS light on, ESP/ESC light on. The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code C0634? ▾
The most common causes of code C0634 are: Defective sensor, Damaged wiring, Faulty mixing flap actuator, Blown fuse. A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code C0634? ▾
Code C0634 has moderate severity (Warning). Short-term driving remains possible, but a prompt check is recommended to prevent worsening.
How do I fix code C0634? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Defective sensor, Damaged wiring, Faulty mixing flap actuator, Blown fuse. Difficulty: Medium · Estimated time: 30-60min.