Strange noises from under the bonnet? Spooky. Happy Halloween from Auto Veteran: may your only scares be costumes.
DTC codes / P22xx · Fuel and air metering (injector circuits) / P22C7
P22C7 means the engine computer has detected a high-voltage condition on the control circuit for the turbocharger compressor outlet valve, which is the valve that regulates boost pressure at the compressor discharge. The computer commands the valve to move, but the circuit voltage stays above the expected range, so the computer flags the circuit as high.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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