Have you or the previous owner dik'd with the temp sensor in the grill area for ERDDT reasons?
That's the first place to check.
If it looks unmolested you could measure the resistance of the temp sensor unplugged and see if it is in range.
You can ignore it until such time that it gets cold enough for ERDTT to start, even though it's still quite warm outside.
Your call if you can live with that or want it fixed.
The sensor is like $5, but it's a huge PITA to get out of the hole in the bumper.
Your HVAC settings may be impacted on auto (really only an issue when you're at the tipping point between barely hot and it will think it's still cold out because -20 offset - but it has cabin temp feedback as well. It just won't use max cooling because it thinks its pretty cool out already)
The part is cheap, but now's a good time to consider if you want to install the ERDTT mod at the same time (to prevent it running so often in the winter). I'm four hours NW of you so I know all about winters in the Twin Cities.
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