^No gas cap warning. I'm not sure if my car even has that option. According to dealer when I first brought in the car with this issue, it was the cap not being tight. Now I'm starting to think it could something else.

My warranty expiring is always at the back of my head

 

The gas cap was a big problem for me for a long time. So the dealer thought. It turned out to be an O2 sensor.

Whenever my check engine light would come because of the gas cap, it took about 3-4 days before it self corrected and the light went out.