Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the part of the car that helps keep the pistons cool is not turning off when it's supposed to. It's like a fan that keeps running even when it's not needed.
The P25AD code is triggered when the engine control module (ECM) detects that the piston cooling oil control circuit is continuously active when it should be off.
The piston cooling oil control circuit is responsible for regulating the flow of oil to cool the pistons. When this circuit is 'stuck on', it means that the control valve or solenoid is not closing properly, allowing oil to flow continuously. This can lead to excessive oil usage and potential engine overheating if not addressed.
• Increased oil consumption
• Engine overheating
• Check engine light illuminated
• Faulty piston cooling oil control valve
• Short circuit in the wiring
• Malfunctioning ECM
ECM: Engine Control Module
Solenoid: An electromechanical device that controls a valve.
• Check for any stored trouble codes and freeze frame data.
• Inspect the wiring and connectors for damage or shorts.
• Test the piston cooling oil control valve for proper operation.
• Replace the piston cooling oil control valve if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$200 - $500
Moderate
• Chevrolet Silverado
• GMC Sierra
• Ford F-150
• Regular maintenance and oil changes.
• Inspect wiring and connectors periodically.
• Use high-quality engine oil.
Engine Performance
• Do not ignore the check engine light.
• Have your vehicle checked by a professional if you notice increased oil consumption.
• Regularly monitor engine oil levels.
Repairs may be covered under the powertrain warranty if the vehicle is still under coverage.
This code has been associated with vehicles that have high mileage or have not been regularly maintained.
Moderate – It should be addressed soon to prevent potential engine damage.
Driving with a malfunctioning engine component can lead to further damage and is not recommended.
• Engine at operating temperature
• Vehicle at idle
The piston cooling oil control valve is typically located near the engine block, often integrated with the oil pump assembly.
Q: Can I drive with a P25AD code?
A: It's not recommended to drive for extended periods with this code, as it can lead to engine damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance and using the correct oil can help prevent issues with the piston cooling system.
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