Powertrain
generic / SAE
P25AB
Piston Cooling Oil Control Circuit High
Control circuit stuck high — short to battery voltage or open coil/return. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / AB
Possible causes
- Control wire shorted to battery voltage high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–4 h
- Component: piston cooling solenoid
- MIL / check engine light
Sources
References
sae:J2012