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Home >> BMW >> 2009 >> 550i Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Self Diagnosis - Theory & Operation (N62) >> 1.15 Comprehensive Component Monitoring >> 1.15.3 Diagnosis of ambient air temperature >> 1.15.3.2 Range check

1.15.3.2 Range check

P0072 (TUMEmin), P0073 (TUMEmax) 

A TUMEmax fault, indicating a short circuit to battery voltage or a broken wire, and a TUMEmin fault, indicating a short circuit to ground will be set, if the ambient air temperature sensor supplies the respective error conditions about the CAN Data Bus to the ECU.

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