LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2013 >> 528xi >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Diagnostic Trouble Codes (N20 & N26) >> Fault Code Tests >> DTC P12A9: BMW DTC 121201; DME -- Boost Sensor 'A' After Running Diagnosis Pressure Too High >> Fault description

Fault description

During the DME after-run

The diagnosis determines whether the ambient pressure, intake-manifold pressure and charging pressure sensors are all registering a single pressure reading.

Fault monitoring conditions:

The fault is detected if the charging pressure sensor reading deviates from the mean value of the other pressure sensors (ambient pressure, charging pressure, intake pipe vacuum) by more than 70 mbar.