P25AE: Piston Cooling Oil Pressure Too Low
Standardized SAE J2012 code · P25xx — Auxiliary inputs
What does P25AE mean?
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.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Low engine oil level
- Medium Sludge-clogged oil gallery
- Low Worn oil pump
Likelihood is a general estimate across vehicles; your make and model may differ.
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P25AE in the community
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