P012D - Turbocharger/Supercharger Inlet Pressure Sensor Circuit High
A Turbocharger Inlet Pressure sensor measures the pressure in the air intake system prior to the Turbocharger.
Fault Code Explained
The ECM has detected that the sensor output is above it’s maximum operating parameter or is higher than expected for the current operating conditions.
If possible use a diagnostic computer to view live data readings for the sensor and compare to actual Inlet Pressure.
- Test sensor supply Voltage
- Check output circuit for short to Positive