Driving my 2014 Altima from Phoenix to Flagstaff last week on I-17. About 30 minutes into the trip, the audible ping warning signal chimed. On the dash display it says "Low Outside Temperature". It was 105 degrees outside, and the temp display showed -28F !! About a minute later, the A/C system shut down. Dead. No response to any of the buttons. Needless to say, it got pretty warm in the car pretty fast. We continued the drive to Flagstaff, knowing it was only 2 hours away. About 20 minutes later, the A/C system came back on. It ran for about 3 minutes, then shut down again. The rest of the trip, the A/C would restart about every 15-20 minutes, run for a few minutes, then shut down again. The outside temp still showed -28F. Got to Flagstaff, put the car in our garage. Next morning, everything worked just fine! Mystery. Took the car to the local Nissan dealer, left it all day. They could not find anything wrong. Told me, "let us know if it happens again." Sure. I just hope it doesn't happen in the desert on the 7 hour drive to San Diego. Any ideas on what's going on here???? I have 25,000 miles on the car, and this has never happened before. Many thanks for any ideas!!!