No Ambient Temperature Reading

[RBertalotto]

The outside ambient temperature on my 2006 2500 Ram diesel reads all dashes or sometime -15 or -4- or 145 degrees. No rhyme or reason to the actual temperature.

Here is what I tried so far:

Replaced sensor located next to radiator on drivers side...No Joy
Disconnected the large red wire next to the fuse box, behind the windshield washer reservoir for 15 minutes....No Joy
Visually checked wires and molex connectors...All seem in tack.

Any more idea of what to do?

Thanks

 

[Bob4x4]

There is a flash available that may help.Tsb 08 026 06 flash update for the ccn
SYMPTOM/CONDITION:The vehicle operator may notice that if a vehicle door is left open for longer than 20seconds the illuminated interior (dome) lamps will turn off.The vehicle operator may describe that the ambient temperature first displayed in theoverhead console is not accurate (displays -40°C or -40°F), when the ignition switch isturned to the “On” position, then slowly updates to the outside ambient temperature as thevehicle is driven.NOTE: DO NOT reprogram the CCN if the overhead displayed temperature stays atthe -40°C (-40°F) reading after driving the vehicle for MORE THAN 3 minutesand at speeds greater than 32 Km/h (20 mph). Check the system for an open