DTC P0111: Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem: Condition

WARNING: This page is about a different car, the 2002 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0111 is set when variation in intake air temperature is less than predetermined. MIL is illuminated when ECM (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

IAT sensor malfunction.
ECM (PCM) malfunction.