P00C3
Turbocharger/Supercharger Bypass Valve B Control Circuit Range/Performance
Generic OBD-II
Common symptoms
What you'll notice
- Check and clean or replace the turbocharger/supercharger bypass valve
- Inspect and repair any damaged or loose wiring connections related to the control circuit
- Perform a diagnostic test using an OBD diagnostic tool to identify any other potential issues
- Update the engine control module (ECM) software to the latest version if available
- Replace the turbocharger/supercharger bypass valve if all other solutions do not resolve the issue.
Common causes
Most likely first
- Faulty turbocharger or supercharger bypass valve
- Clogged or blocked turbocharger/supercharger bypass valve
- Malfunctioning turbocharger or supercharger bypass valve sensor
- Wiring issues or loose connections in the turbocharger/supercharger bypass valve control circuit
- ECM (Engine Control Module) or PCM (Powertrain Control Module) software issue
How to diagnose & fix
Work through it in order
- Loss of power or reduced engine performance
- Turbo lag or slow acceleration
- Whistling or hissing noise from the turbocharger or supercharger
- Check engine light or MIL (Malfunction Indicator Lamp) illumination
- Increased fuel consumption
Read & clear P00C3 yourself
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