P25A9
Piston Cooling Oil Control Circuit/Open
P25A9 is an OBD-II diagnostic trouble code meaning: Piston Cooling Oil Control Circuit/Open. Common causes: open circuit in control circuit wiring harness, malfunction of the piston cooling solenoid valve. Estimated repair cost: $17–89.
Symptoms
- Check Engine light comes on
- Possible engine overheating
- Reduced engine power
- Unusual noises from the engine
Causes
- Open circuit in control circuit wiring harness
- Malfunction of the piston cooling solenoid valve
- Problems with the control relay
- Short circuit in the circuit
- Engine control unit malfunction
How to Fix
- Check the integrity of the control circuit wiring harness
- Check the resistance of the solenoid valve
- Check the operation of the control relay
- Check connections to engine control unit
- Replace faulty components
Related codes
Error P25A9 by Vehicle Brand
FAQ
What does the P25A9 code mean?
P25A9 is an OBD-II diagnostic trouble code that indicates: Piston Cooling Oil Control Circuit/Open
What causes a P25A9 error code?
The most common causes of P25A9 include: Open circuit in control circuit wiring harness; Malfunction of the piston cooling solenoid valve; Problems with the control relay; Short circuit in the circuit.
How do I fix a P25A9 diagnostic trouble code?
To fix P25A9: Check the integrity of the control circuit wiring harness. Check the resistance of the solenoid valve. Check the operation of the control relay. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P25A9?
Limited driving only, diagnose soon
How much does it cost to fix P25A9?
The estimated repair cost for P25A9 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat