P2CB8
Turbocharger/Supercharger Boost Pressure B Too High - Mechanical
Severity
🔴 HighCan you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)
Symptoms
- Reduced engine power
- Unusual noises from the turbocharger area
- Black smoke from the exhaust pipe
- Dips during acceleration
- Check Engine light comes on
Causes
- Bypass valve stuck
- Turbine actuator malfunction
- Contamination or damage to the intake tract
- Mechanical damage to the turbocharger
- Problems with vacuum lines
How to Fix
- Check the condition of the bypass valve
- Diagnose the operation of the turbine actuator
- Inspect the intake tract for contamination
- Check the tightness of the vacuum lines
- Test the mechanical part of the turbocharger
Related codes
Error P2CB8 by Vehicle Brand
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