P25AC
Piston Cooling Oil Control Circuit Performance/Stuck Off
P25AC is an OBD-II diagnostic trouble code meaning: Piston Cooling Oil Control Circuit Performance/Stuck Off. Common causes: malfunction of the piston cooling solenoid valve, open or short circuit in control circuit. Estimated repair cost: $33–167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased engine noise
- Engine overheating under load
- Possible misfires
Causes
- Malfunction of the piston cooling solenoid valve
- Open or short circuit in control circuit
- Problems with the engine control unit
- Dirty or clogged oil passages
- Mechanical damage to the piston cooling system
How to Fix
- Check the condition of the piston cooling solenoid valve
- Check the integrity of the control circuit and wiring harness
- Check the oil pressure in the system
- Clean the oil passages of the piston cooling system
- If necessary, replace faulty components
Related codes
Error P25AC by Vehicle Brand
FAQ
What does the P25AC code mean?
P25AC is an OBD-II diagnostic trouble code that indicates: Piston Cooling Oil Control Circuit Performance/Stuck Off
What causes a P25AC error code?
The most common causes of P25AC include: Malfunction of the piston cooling solenoid valve; Open or short circuit in control circuit; Problems with the engine control unit; Dirty or clogged oil passages.
How do I fix a P25AC diagnostic trouble code?
To fix P25AC: Check the condition of the piston cooling solenoid valve. Check the integrity of the control circuit and wiring harness. Check the oil pressure in the system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P25AC?
Do not drive — repair immediately
How much does it cost to fix P25AC?
The estimated repair cost for P25AC is $33–167. Actual cost depends on your vehicle, location, and labor rates.
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