DTC 24 - Intake Air Temperature Sensor Signal

Intake Air Temperature (IAT) sensor is built into air cleaner cover. The IAT sensor senses intake air temperature. If ECM detects a problem in this circuit, it operates in the fail safe mode in which the intake air temperature is assumed to be 68°F (20°C).

A failure code is set there is an open or short in IAT sensor circuit for .5 second or more. Check for open or short in IAT circuit, a faulty IAT sensor or ECM.

Fig 1: DTC 24 - Schematic

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Fig 2: DTC 24 - Diagnostic Flowchart (1 Of 2)

Fig 3: DTC 24 - Diagnostic Flowchart (2 Of 2)