OBD-II code · Powertrain (generic, extended)
P28D5 Clutch B Phase U-V-W Performance
The phase currents of the clutch B BLDC motor do not match the commanded commutation pattern within tolerance. Sensor or driver synchronisation off.
Is it safe to drive with P28D5?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyRotor position sensor offset
- PossiblePhase current imbalance
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 3–10 h
- Emissions test
- Usually unaffected
- Parts involved
- Clutch Motor B, Wiring Harness, Tcm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.