OBD-II code · Network
U04BF Invalid Data Received From Drive Motor A Clutch Actuator
A receiving module detected implausible data from the drive motor A clutch actuator (engagement clutch on hybrid drivetrains). Position or pressure values fail plausibility checks and are rejected.
Is it safe to drive with U04BF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyModule internal fault or sensor input drift
- PossibleSoftware version mismatch after replacement
- Less likelyGateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Drive Motor A Clutch Actuator
Related codes
- U04BCInvalid Data Received From Switch Input Module C
- U04BDInvalid Data Received From Park Lock/Pawl Control Module
- U04BEInvalid Data Received From Battery Charger Control Module B
- U04C0Invalid Data Received From Battery Management Control Module
- U0500Invalid Data Received from Communication Module
- U0501Invalid Data Received From Door Control Module B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.