A month or so ago, I had my AC compressor worked on. When I drove away I noticed that the temp was no longer displaying. I didnt care and was just happy to get the car back. Come today, the temp, out of nowhere, began to show -40 degrees. As you might have guessed, this has now caused the AC to blow warm air. I think the dealership forgot to reconnect the OAT when working on the AC.
I THINK I located where the sensor is, but I have no clue where to check to see if the wire is disconnected. Where do I look to see if the wire is disconnected?