DTC P0111: Intake Air Temperature Sensor Circuit, Performance Problem: Conditions
WARNING: This page is about a different car, the 2002 Mazda Protege5 and 2002 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when intake air temperature is 104°F (40°C) greater than engine coolant temperature and ignition switch is on. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- Intake Air Temperature (IAT) sensor malfunction.
- PCM malfunction.
- Poor connections at IAT sensor and PCM.