Ambient Temperature Sensor Fault Codes

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.

The outside temperature function is supported by the ambient temperature sensor (ATS), a signal and ground circuit hardwired to the PCM, and the CMTC display.

If the CMTC display indicates 54°C (130°F) or the ATS sense circuit is shorted to ground, the temp display will be 54°C (130°F) to indicate a SHORTED circuit condition.

If the CMTC display indicates -40°C (-40°F) to indicate an OPEN circuit condition.

If there is an OPEN or SHORTED circuit condition, it must be repaired before the CMTC VFD can be tested.

Ambient Temperature Sensor DTCs will be recorded in the PCM. The ATS can be diagnosed using the following Sensor Test. Test the ATS circuits using the diagnostics in the Body Diagnostic Procedures service information. If the CMTC passes the self test, and the ATS, the circuits, and PCI bus communications are confirmed to be OK, but the CMTC temperature display is inoperative or incorrect, replace the PCM.