P25B5

Turbocharger/Supercharger Wastegate B Stuck Open

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Reduced engine power
Increased fuel consumption
Unstable engine operation
Noise from the turbocharging system
Check Engine light comes on

Causes

Mechanical jamming of the wastegate damper
Vacuum valve actuator malfunction
Problems with the pressure control solenoid valve
Open or short circuit in control circuit
Defective electronic turbocharger control unit

How to Fix

Diagnosis of the mechanical condition of the wastegate damper
Checking Vacuum Lines and Drive
Testing of solenoid control valves
Checking continuity of circuit and connections
Replacing damaged components

Related codes

P25B4 P25B6 P25B7