Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / AE
Possible causes
- Low engine oil level high
- Sludge-clogged oil gallery medium
- Worn oil pump low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1–8 h
- Component: oil pump
- Component: oil gallery
- Component: piston cooling solenoid
- MIL / check engine light
Sources
References
sae:J2012