Turbocharger/Supercharger Bypass Valve B Temperature Too High

Common symptoms

What you'll notice

• Inspect and clean the turbocharger/supercharger bypass valve.
• Replace the turbocharger/supercharger bypass valve.
• Check for any leaks in the turbocharger/supercharger system and repair if necessary.
• Ensure the intercooler is functioning properly and replace if needed.
• Check the exhaust system for blockages or restrictions and clear them if found.

Common causes

Most likely first

1. Faulty turbocharger/supercharger bypass valve
2. Restricted or blocked exhaust system
3. Engine running too hot or coolant system malfunction
4. Malfunctioning boost pressure sensor
5. Worn or damaged turbocharger/supercharger

How to diagnose & fix

Work through it in order

1. Engine misfires or hesitates
2. Decreased engine power or acceleration
3. Loud whining or screeching noise from the engine
4. Increased exhaust smoke or emissions
5. Engine overheating or temperature gauge reading high