Powertrain
generic / SAE
P2797
Electric/Auxiliary Transmission Fluid Pump A Performance/Stuck Off
The first auxiliary transmission fluid pump is commanded on but does not run.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 97
Possible causes
- Pump motor seized by sediment high
- Cracked rotor magnet decouples drive medium
- Carbon or debris buildup preventing free movement low
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: medium
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–4 h
- Component: aux trans pump a
- Component: pump motor
- MIL / check engine light
Sources
References
sae:J2012