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 above 4.8 volts.
- (K25) AAT signal circuit shorted to battery voltage.
- Ambient Air Temperature Sensor internal failure.
- (K25) AAT signal circuit open.
- (K4) sensor ground circuit open.
- PCM.