OBD-II code · Powertrain (generic)
P00C2 Turbocharger/Supercharger Bypass Valve B Control Circuit High
Bypass valve B control voltage above expected range. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Is it safe to drive with P00C2?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring shorted to battery
- Less likelyConnector pins corroded - high contact resistance
- Less likelySupply wire pinched against B+ source
Symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Bypass Valve B, Actuator Wiring
Related codes
- P25FATurbocharger/Supercharger Bypass Valve C Control Circuit High
- P00BFMass or Volume Air Flow B Circuit Range/Performance - Air Flow Too High
- P00C0Turbocharger/Supercharger Bypass Valve B Control Circuit
- P00C1Turbocharger/Supercharger Bypass Valve B Control Circuit Low
- P00C3Turbocharger/Supercharger Bypass Valve B Control Circuit Range/Performance
- P00C4Turbocharger/Supercharger Bypass Valve B - Mechanical
- P00C5Turbocharger/Supercharger B Turbine Overspeed
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.