Monitored & Set Conditions
WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
Monitored with the ignition on and engine running. DTC is set when the PCM compares the outputs of the ECT, IAT, and Ambient Temp sensors. If one sensor does not correlate with the other two sensors the fault is set.