P00C2
Turbocharger/Supercharger Bypass Valve B Control Circuit High
Generic OBD-II
Common symptoms
What you'll notice
- Check the wiring and connections related to the turbocharger/supercharger bypass valve B control circuit
- Inspect the turbocharger/supercharger bypass valve B for any damage or malfunction
- Clean or replace the air filters in the intake system
- Verify that the engine's computer software is up to date and reprogram if necessary
- If all else fails, consider replacing the turbocharger/supercharger bypass valve B with a new one
Common causes
Most likely first
- Faulty turbocharger/supercharger bypass valve B
- Wiring issues or short circuit in the control circuit of the turbocharger/supercharger bypass valve B
- Malfunctioning engine control module (ECM) or faulty software
- Boost pressure sensor malfunction or wiring problems
- Blocked or clogged intake or exhaust system components
How to diagnose & fix
Work through it in order
- Loss of engine power
- Engine hesitations or stalling
- Check Engine Light (CEL) illuminated
- Decreased fuel efficiency
- Abnormal noise from the turbocharger/supercharger area
Read & clear P00C2 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.