P02CB OBD II Trouble Code Turbocharger/Supercharger B Underboost Condition
How to quickly diagnose, repair, and info on symptoms and causes of a P02CB DTC code which refers to an underboost condition with the B turbo or supercharger system.
Symptoms of P02CB OBD II Trouble Code
- MIL (Malfunction indicator lamp) illumination
- Reduced power output from engine, possibly in a limp mode
- Unusual sounds from the engine/turbo
Common Causes of P02CB OBD II Trouble Code
- Intake (induction) air restriction or leak
- Failed or damaged turbocharger (sticking, binding, etc.)
- Faulty boost/charge pressure sensor
- Faulty wastegate bypass regulator valve (VW)
- Low fuel pressure condition (Isuzu)
- Sticking turbo nozzle control solenoid (Isuzu)
- Faulty injector control pressure (ICP) sensor (Ford)
- Low oil pressure (Ford)
- EGR system fault (Ford)
- Variable geometry turbocharger (VGT) actuator (Ford)
- VGT vanes sticking (Ford)