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

DTC is set when Engine Control Module (ECM) detects variation in Intake Air Temperature (IAT) is less than predetermined after engine is at operating condition. DTC is also set when intake air temperature is 14°F (-10°C) or less or 158°F (70°C) or more. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:

• ECM malfunction.
• IAT sensor malfunction.
• IAT sensor circuit malfunction (high resistance).