Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the part that helps keep the pistons cool is not working right. It's like when a fan in your room stops working, and it gets too hot.
This code indicates that the control circuit for the piston cooling oil system is experiencing a high voltage condition.
The P25AB code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the piston cooling oil control circuit. This circuit is responsible for regulating the flow of oil to cool the pistons during engine operation. A high voltage reading can indicate a problem with the wiring, connectors, or the control solenoid itself.
• Check Engine Light is on
• Engine overheating
• Reduced engine performance
• Faulty piston cooling oil control solenoid
• Wiring issues such as shorts or open circuits
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, second generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the piston cooling oil control solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the piston cooling oil control solenoid if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance checks
• Ensure proper oil levels
• Inspect wiring and connectors periodically
Engine Performance
• Do not ignore the Check Engine Light.
• Address overheating issues promptly to avoid engine damage.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been associated with issues in vehicles with advanced engine cooling systems.
Moderate – Address promptly to prevent potential engine damage.
Driving with an overheating engine can lead to severe damage and is unsafe.
• Engine running
• Normal operating temperature
The piston cooling oil control solenoid is typically located on or near the engine block.
Q: Can I drive with a P25AB code?
A: It's not recommended as it may lead to engine overheating.
Q: How do I reset the Check Engine Light?
A: After repairs, use an OBD-II scanner to clear the code.
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