Powertrain
generic / SAE
P0C29
Electric/Auxiliary Transmission Fluid Pump A Driver Circuit Performance
The output driver of auxiliary transmission fluid pump A reports a performance fault. Driver characteristic outside calibration.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / numberC / 29
Possible causes
- Driver IGBT aged high
- Thermal drift outside calibration 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: 400–2500 €
- Estimated time: 2–8 h
- Component: aux trans pump a driver
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012