Chassis
generic / SAE
C00A4
Driveline Control Module Rear Differential Unit B Control Circuit Driver
Fault on driveline control module driver for rear differential unit B.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number– / A4
Possible causes
- Internal driver fault high
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–3000 €
- Estimated time: 1–5 h
- Component: driveline module
- Component: rear diff actuator b
- MIL / check engine light
- drive cycle required
- limp mode possible
Sources
References
sae:J2012