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• P1175

  P1175

  
  

  Diagnosis information - DME V6 DFI Intake air temperature stuck

  NOTE:

• The intake air temperature sensor is integrated into the hot-film mass air flow sensor.
• The hot-film mass air flow sensor must not be removed, but only interchanged complete with tubular piece.
  
  

  NOTE: Diagnosis compares the intake air temperature for a vehicle which has been stopped for a long period of time with the engine temperature. These values must be approximately the same when the engine is started again.

  
  

  Diagnostic conditions

• Battery positive voltage between 10 V and 16 V
• Engine start temperature -35 to +50 °C (-31 to +122 °F)
• Engine switch-off temperature with prior engine operation higher than 70 °C (158 °F)
• No engine temperature sensor fault
  
  

  Possible fault causes

• Intake air temperature sensor faulty (short circuit or contact resistances)
  
  

  Affected contacts on the DFI control unit connector

  
  
  Connector [B]:
• Contact 13
  
  

  Affected contacts on the hot-film mass air flow sensor connector (naturally aspirated engine)

• Contact 1