OBD-II code · Powertrain (generic, extended)
P25AE Piston Cooling Oil Pressure Too Low
With the piston-cooling jets commanded on, the dedicated oil-pressure sensor in that gallery reads below the safe threshold. Insufficient flow to the jets means real piston cooling is not happening — the ECM warns the driver and may reduce torque to protect the pistons.
Is it safe to drive with P25AE?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyLow engine oil level
- PossibleSludge-clogged oil gallery
- Less likelyWorn oil pump
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Oil Pump, Oil Gallery, Piston Cooling Solenoid
Related codes
- P25A9Piston Cooling Oil Control Circuit/Open
- P25ABPiston Cooling Oil Control Circuit High
- P25ACPiston Cooling Oil Control Circuit Performance/Stuck Off
- P25ADPiston Cooling Oil Control Circuit Stuck On
- P25AFCoolant Temperature Control Module Requested MIL Illumination
- P25B0Fuel Level Sensor A Stuck
- P25B1Fuel Level Sensor B Stuck
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.