OBD-II code · Powertrain (generic, extended)
P2797 Electric/Auxiliary Transmission Fluid Pump A Performance/Stuck Off
The first auxiliary transmission fluid pump is commanded on but does not run.
Is it safe to drive with P2797?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump motor seized by sediment
- PossibleCracked rotor magnet decouples drive
- Less likelyCarbon or debris buildup preventing free movement
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Aux Trans Pump A, Pump Motor
Related codes
- P27A3Electric/Auxiliary Transmission Fluid Pump B Performance/Stuck Off
- P2794Gear Shift Direction Circuit Low
- P2795Gear Shift Direction Circuit High
- P2796Electric/Auxiliary Transmission Fluid Pump A Control Circuit / Open
- P2798Electric/Auxiliary Transmission Fluid Pump A Control Circuit Low
- P2799Electric/Auxiliary Transmission Fluid Pump A Control Circuit High
- P279ATransfer Case Gear High Incorrect Ratio
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.