Ford P0111 OBD-II Trouble Code Definition: P0111 Intake Air Temperature Circuit Range/Performance Problem P0111 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0111 IAT Circuit Malfunction What does the code mean? OBD-ii Code P0111 definition: The IAT (Intake Air Temperature) sensor is a thermistor that varies resistance based upon the temperature of the engine intake air. Usually […]