P25A9

Piston Cooling Oil Control Circuit/Open

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

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

P25A8 P25AA P25AB