P25B4
Turbocharger/Supercharger Wastegate A Stuck Closed
P25B4 is an OBD-II diagnostic trouble code meaning: Turbocharger/Supercharger Wastegate A Stuck Closed. Common causes: mechanical jamming of the damper, damper actuator malfunction. Estimated repair cost: $33–167.
Symptoms
- Reduced engine power
- Excessive turbocharger noise
- Jerking during acceleration
- Check Engine light comes on
- Increased fuel consumption
Causes
- Mechanical jamming of the damper
- Damper actuator malfunction
- Problems with the vacuum drive
- Open or short circuit in control circuit
- Clogged or corroded damper mechanism
How to Fix
- Check the damper mechanism for jamming
- Check the operation of the damper actuator
- Diagnose the vacuum system
- Check the control circuit for opens and shorts
- Clean or replace the damper mechanism if necessary
Related codes
Error P25B4 by Vehicle Brand
FAQ
What does the P25B4 code mean?
P25B4 is an OBD-II diagnostic trouble code that indicates: Turbocharger/Supercharger Wastegate A Stuck Closed
What causes a P25B4 error code?
The most common causes of P25B4 include: Mechanical jamming of the damper; Damper actuator malfunction; Problems with the vacuum drive; Open or short circuit in control circuit.
How do I fix a P25B4 diagnostic trouble code?
To fix P25B4: Check the damper mechanism for jamming. Check the operation of the damper actuator. Diagnose the vacuum system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P25B4?
Do not drive — repair immediately
How much does it cost to fix P25B4?
The estimated repair cost for P25B4 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat