Outside Air Temperature way off

71sbeetle · February 21, 2015

So, one thing I noticed on my 2014 is that the outside air temp display is way off most of the time, especially when truck is just started.

When I first get in the truck and turn the ignition on, I get the "ice possible drive with care" warning, and temp shows crazy cold temps (I've seen anywhere from -20F to -40F so far) even though actual temperature is in the 60s or 70s. Sometimes it will eventually go up gradually to actual temp, but sometimes like yesterday, about 5 minutes into my hour drive home it went from -40 to -36 to 34 and finally 53 after about 5 minutes of driving, then it stayed at 53 for the remainder of the drive, with actual temps between 68 and 73.

Has anyone had that problem before?

SouthernSilveradoGuy85 · February 21, 2015

Mine starts off a little off but not nearly as much as yours. It takes a few minutes for it to get to about what it should be. It shouldn't be as off as yours is though.

pm26 · February 22, 2015

The outside temperature sensor needs to be replaced on your truck. Take it to a dealer.

71sbeetle · February 22, 2015

OK will do thank you! I need to take it to the dealer anyway to have them replace the rear sliding window seal and the AC/Radio panels (LED rings don't work).

I am guessing that the fact my AC blows hot air when it's in the off position is linked to the bad temp sensor?

71sbeetle · February 22, 2015

Interestingly enough, the CEL/MIL came on today when I put my turn signal and also got a warning that the right rear turn signal was inop. I figured they were related. I went looking all over for a 7444 or 7444LL bulb and the only ones I could find were Amber (7444NA) so I bought a 7443 and apparently it's the same thing .... Anyway, CEL didn't go away so I scanned the truck with my OBD2 tool and guess what .... it has a P0071 code for Implausible signal of ambient temperature sensor. I didn't clear it so dealer can see it when I bring it in. Remote start won't work now, but I am guessing it's because the CEL is on. It's weird though that I have put close to 1000 miles on the truck since I bought it last week and the temp has been acting up pretty much from day 1 but only now the CEL comes on, OBD2 shows CEL has been on for 127km (79 miles).

fondupot · February 23, 2015

Interestingly enough, the CEL/MIL came on today when I put my turn signal and also got a warning that the right rear turn signal was inop. I figured they were related. I went looking all over for a 7444 or 7444LL bulb and the only ones I could find were Amber (7444NA) so I bought a 7443 and apparently it's the same thing .... Anyway, CEL didn't go away so I scanned the truck with my OBD2 tool and guess what .... it has a P0071 code for Implausible signal of ambient temperature sensor. I didn't clear it so dealer can see it when I bring it in. Remote start won't work now, but I am guessing it's because the CEL is on. It's weird though that I have put close to 1000 miles on the truck since I bought it last week and the temp has been acting up pretty much from day 1 but only now the CEL comes on, OBD2 shows CEL has been on for 127km (79 miles).

Yea remote start wont work when a code is stored.

Redray · February 24, 2015

I have two weather stations that are within a degree of each other at all times. I park my truck about 30 feet from one of the stations and the truck always reads a few degrees higer.

71sbeetle · February 25, 2015

I actually also have a weather station at home (Vantage Pro 2) the sensors in my VWs always show within a degree or two from it, the Chevy's been all over the place. I have an appointment to have the sensor replaced

Thanks all for the help!