P25AC

Piston Cooling Oil Control Circuit Performance/Stuck Off

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$33–167 (est.)

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

P25AB P25AD P25AE