Possible Causes
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
- Ambient Air Temperature Sensor voltage below 0.3 volts.
- Ambient Air Temperature Sensor internal failure.
- (K145) AAT signal circuit shorted to ground.
- (K25) AAT signal circuit shorted to (K4) sensor ground circuit.
- PCM.