DTC P0111: Intake Air Temperature Circuit - Range/Performance: Condition

DTC is set when 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 Engine Control Module (ECM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

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