OBD Guide

P25AD

Piston Cooling Oil Control Circuit Stuck On

P25AD is an OBD-II diagnostic trouble code meaning: Piston Cooling Oil Control Circuit Stuck On. Common causes: piston cooling valve jammed, open or short circuit in control circuit. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Check Engine light comes on
  • Increased oil consumption
  • Reduced engine power
  • Unusual noises from the engine
  • Engine overheating

Causes

  • Piston cooling valve jammed
  • Open or short circuit in control circuit
  • Solenoid valve malfunction
  • Problems with the engine control unit
  • Contamination of oil or oil passages

How to Fix

  1. Check the condition of the oil and oil filter
  2. Diagnose the control circuit for opens and short circuits
  3. Check the operation of the piston cooling valve
  4. If necessary, replace the valve or its components
  5. Reset the fault code and check if it returns

Related codes

Error P25AD by Vehicle Brand

FAQ

What does the P25AD code mean?

P25AD is an OBD-II diagnostic trouble code that indicates: Piston Cooling Oil Control Circuit Stuck On

What causes a P25AD error code?

The most common causes of P25AD include: Piston cooling valve jammed; Open or short circuit in control circuit; Solenoid valve malfunction; Problems with the engine control unit.

How do I fix a P25AD diagnostic trouble code?

To fix P25AD: Check the condition of the oil and oil filter. Diagnose the control circuit for opens and short circuits. Check the operation of the piston cooling valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P25AD?

Limited driving only, diagnose soon

How much does it cost to fix P25AD?

The estimated repair cost for P25AD is $33–111. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat