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Home >> BMW >> 2013 >> 535i Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Self Diagnosis - N55 - Diagnostic Trouble Codes - DTC P1638 (BMW DTC 100001) Through DTC P10EB (BMW DTC 10BA41) >> DTC P12B9; BMW DTC 105201: Ambient pressure sensor, overrun: Pressure too high >> Fault description

Fault description

During the control module's shutdown phase the diagnostic function monitors the barometric-pressure sensor, intake-manifold pressure sensor and boost-pressure sensor to determine whether they are all measuring the same pressure.