gas cap light keeps going on on 2007 Jeep Compass

what does this mean when my gas cap light keeps going on. I tighten the gas cap and drive and it goes off again.

Asked by for the 2007 Jeep Compass
don't know mine is doing the same thing
1 more answer , 1 more comment
did you have the gas cap tested at a shop?? may have a bad seal.

I'm having the same problem, I bought a new gas cap, and I'm still getting the error. Even the mechanics couldn't figure out how to reset it, it keeps giving them the error code that the gas cap is missing