When Monitored and Set Condition:
WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
When Monitored: Engine off time is greater than 480 minutes. Ambient temperature is greater than 4 deg C (38 deg F).
Set Condition: After a calibrated amount of cool down time the PCM compares the ECT Sensor, IAT Sensor, and the Ambient Air Temp Sensor values. The IAT Sensor value is not within 10 deg C (18 deg F) of the other two temperature sensors this fault will set. Two Trip Fault.