I had a similar problem in Oct 06 & found on TDR forum re MiniComputer Temp failure (Ambient Temperature Sensor) autoparts.com Standard#TX49 ($13. 08) & Airtex#581136 ($17. 45); the Dodge P/N appears to be 5021984AC. I unpluged sensor (located beneath hood behind grill) & confirmed ID to above two units. While sensor out of circuit the minicomputer read “OC”; reinstalled sensor & following day minicomputer readout appears normal.
Still working fine,
Jim