Powertrain
generic / SAE
P28C7
Clutch A Phase U-V-W Performance
The phase currents of the clutch A BLDC motor do not match the commanded commutation pattern within tolerance. Sensor or driver synchronisation off.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / C7
Possible causes
- Rotor position sensor offset high
- Phase current imbalance medium
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 500–2800 €
- Estimated time: 3–10 h
- Component: clutch motor a
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012