P2C7C
Turbocharger Turbine Inlet Valve Supply Circuit Low
The supply voltage to the turbocharger turbine inlet valve actuator is below the expected window. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
The supply voltage to the turbocharger turbine inlet valve actuator is below the expected window. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
Common causes
- high
Supply fuse blown
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-2750
- medium
Supply wire shorted to ground
A plausible cause — test and verify before replacing parts.
Typical part cost: $440-2750
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does P2C7C mean?
P2C7C means "Turbocharger Turbine Inlet Valve Supply Circuit Low". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2C7C?
supply fuse blown; supply wire shorted to ground; connector pins corroded - high contact resistance — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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