OBD-II code · Powertrain (generic, extended)
P28D7 Clutch B Pump Motor Performance
The clutch B hydraulic pump motor does not produce the expected flow for the commanded speed. Worn pump, leakage, or aged motor characteristic.
Is it safe to drive with P28D7?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyHydraulic pump worn
- PossibleMotor characteristic aged
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, Clutch Actuator B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.