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P0073 B14 (Ambient temperature display temperature sensor) : Short circuit to positive (P0073) Possible cause: B14 (Ambient temperature display temperature sensor) Affected functions: Engine output Test 1: Ambient temperature Test 2: Check component B14 (Ambient temperature display temperature sensor). 1. Ambient temperature Preconditions for test Ambient temperature Test prerequisite 10.52SS Page 8312010 Mercedes Benz E 63 AMG Sedan (212.077) V86.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 832 Air filter and associated hoses are correctly fitted. Test sequence Drive vehicle with constant engine load at a speed of > 50 km/h (> 31 mph) for approx. 5 min. Status of the relevant actual values: Ambient temperature:Warning! Communication with ECU required. Intake air temperature:Warning! Communication with ECU required. Question Is the temperature difference between component B14 (Ambie...
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