P012E - Turbocharger/Supercharger Inlet Pressure Sensor Circuit Intermittent/Erratic
A Turbocharger Inlet Pressure sensor measures the pressure in the air intake system prior to the Turbocharger.
Fault Code Explained
The sensor output signal may be intermittently going in and out of it’s normal operating parameters or changing at a rate that is not consistent with the current engine operating conditions.
If possible use a diagnostic computer to view live data readings for the sensor and compare to actual actual pressure. Test sensor supply Voltage and output signal