Turbocharger/Supercharger B Overboost Condition

Common symptoms

What you'll notice

• Inspect and repair any leaks or damaged hoses in the turbocharger or supercharger system.
• Replace the wastegate or blow
• off valve if they are not functioning properly.
• Clean or replace the air filter to ensure proper airflow to the turbocharger or supercharger.
• Check and adjust the wastegate actuator or bypass valve to prevent overboosting.
• If necessary, reflash the engine control unit (ECU) to recalibrate the boost control system.

Common causes

Most likely first

1. Faulty wastegate solenoid
2. Stuck wastegate valve
3. Boost pressure sensor malfunction
4. Clogged or restricted air intake
5. Faulty turbocharger or supercharger

How to diagnose & fix

Work through it in order

1. Loss of power or hesitation during acceleration
2. Engine misfire or rough idle
3. Excessive smoke from the exhaust
4. Increased fuel consumption
5. Engine overheating