OBD-II code · Chassis
C0374 4WD Drive Coupling
The 4WD or AWD control module has detected a fault on the electronic drive coupling that distributes torque between axles. Reduced torque transfer or a complete loss of all-wheel drive function may result.
Is it safe to drive with C0374?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyCoupling actuator failed
- PossibleCoupling oil overheated
- Less likelyWiring or connector fault
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
- 1.5–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Awd Coupling, Awd Control Module, Coupling Actuator
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.