OBD-II code · Powertrain (generic, extended)
P27E5 Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Low
The control circuit for the auxiliary transmission fluid pump control valve reports a circuit low condition. Pump pressure regulation cannot be commanded as expected.
Is it safe to drive with P27E5?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to ground
- PossibleInternal short in valve coil
- Less likelyConnector pins corroded - high contact resistance
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
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Aux Transmission Pump Control Valve, Wiring Harness, Tcm
Related codes
- P27E2Electric/Auxiliary Transmission Fluid Pump B Pressure Too Low
- P27E3Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit/Open
- P27E4Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Range/Performance
- P27E6Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High
- P27E7Transmission Range Control B Circuit/Open
- P27E8Transmission Range Control B Circuit Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.