Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / D7
Possible causes
- Hydraulic pump worn high
- Motor characteristic aged 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: 500–2500 €
- Estimated time: 3–10 h
- Component: clutch motor b
- Component: clutch actuator b
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012