Possible Causes

Malfunction is detected when:

• DTC P0112 Or DTC P0113
  
  An excessively low or high voltage from IAT sensor is sent to ECM.
• DTC P0127
  
  Rationally incorrect voltage from IAT sensor is sent to ECM, compared with voltage signal from ECT sensor.

Possible causes are:

• IAT sensor circuit open or shorted.
• Defective IAT sensor.