C05EB4WD/AWD Clutch B Temperature Too High
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- The AWD module has calculated or measured that clutch B has passed its permitted temperature, usually after long slipping in deep snow, sand or mud, or when towing. In a twin-clutch rear module the two wheel clutches heat up separately, so one side can reach its limit while the other is still cool, for instance when only one rear wheel spins. GKN's actuator controller tracks clutch temperature, and suppliers patent staged protection: BorgWarner reduces engine torque from about 130 °C until the clutch drops below 110 °C, JTEKT estimates oil temperature from torque and wheel speed and then lowers the target torque. Audi documents the twin code C05DC00 for clutch A only. Once cooled, the system normally returns to full function. No manufacturer publishes a C05EB case.
- What you may notice
- AWD overheating or temporarily disabled message
- Less drive to the rear until the clutch has cooled
- Engine power briefly reduced during wheel spin
- Likely causes
- LikelyLong wheel spin on one rear wheel in snow, sand or mud
- PossibleTowing or climbing with high, continuous torque transfer
- PossibleDifferent tyre sizes or wear front to rear causing permanent slip
- RareAged or wrong fluid in the rear drive unit
- Repair
- Easy · Often possible to do yourself.Typical cost: €0 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.