OBD-II code · Chassis
C0631 Front Axle Disconnect Actuator
Generic fault on front axle disconnect actuator. The disconnect decouples the front axle from the drivetrain to save fuel in 2WD mode.
Is it safe to drive with C0631?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyActuator failed
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Front Axle Disconnect Actuator
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.