P00C0
Turbocharger/Supercharger Bypass Valve B Control Circuit
Generic OBD-II
Real-world scan data
Seen in
57
scans in the past year
Found in
<0.1%
of scans
<0.1%
of scans that found faults
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check the turbocharger/supercharger bypass valve wiring and connections for any damage or loose connections.
- Inspect the turbocharger/supercharger bypass valve for any signs of a malfunction or sticking.
- Clean the turbocharger/supercharger bypass valve and ensure it is free from any debris or buildup.
- Test the turbocharger/supercharger bypass valve using a diagnostic tool to assess its functionality.
- If necessary, replace the turbocharger/supercharger bypass valve with a new one if all other solutions have been exhausted.
Common causes
Most likely first
- Faulty turbocharger or supercharger bypass valve
- Loose or damaged wiring or connectors in the control circuit
- Faulty engine control module (ECM)
- Restricted air intake or exhaust system
- Low or contaminated engine oil causing insufficient lubrication for the turbocharger/supercharger
How to diagnose & fix
Work through it in order
- Loss of power or decreased engine performance
- Engine misfires or hesitation during acceleration
- Strange or excessive noise from the turbocharger or supercharger system
- Engine stalling or difficulty starting the vehicle
- Reduced fuel efficiency or increased fuel consumption
Read & clear P00C0 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.