Ambient temperature sensor not working on 2002 Chrysler Voyager

The overhead gauge reads -40. I have replaced the actual sensor behind front grill but that did not fix it. Are there any fuses, relays or programming that needs to be replaced/corrected to get this gauge to start reading accurately again?
Thank you!

Asked by for the 2002 Chrysler Voyager
i do belive the overhead has gone bad. this is not uncommon
Is there a specific part or is it the whole gauge unit. The rest of the functions seem to work ok!
i think its the assembly