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

DTC is set if input voltage from IAT indicates intake air temperature is 104°F (40°C) greater than engine coolant temperature input from Engine Coolant Temperature (ECT) sensor. This is a continuous monitor. MIL is illuminated when Powertrain Control Module (PCM) detects malfunction during 2 consecutive drive cycles. Possible causes are:

• IAT sensor malfunction.
• Poor connection at IAT sensor and Powertrain Control Module (PCM).
• PCM malfunction.