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Home >> BMW >> 2014 >> 328d >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes (N47 & N57, Diesel) >> Fault Code Tests >> DTC P12A5: BMW DTC 104301; DME -- Manifold Absolute Pressure Sensor 'A' After Running Diagnosis Pressure Too High >> Fault description

Fault description

During the DME after-run the diagnosis determines whether ambient pressure sensor, intake pipe pressure sensor and charging pressure sensor measure the same pressure.

Fault monitoring conditions:

The fault is detected when the pressure measured by the intake pipe pressure sensor deviates too greatly from the mean value of the pressure values of the pressure sensors (ambient pressure, pressure before throttle valve, intake pipe pressure) (deviation greater than the tolerance of the sensor).