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.

by in Sacramento, CA on June 24, 2010
2 answers 1 comment
ANSWER by , June 24, 2010
did you have the gas cap tested at a shop?? may have a bad seal. Roy
COMMENT by , June 23, 2011
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
ANSWER by , July 03, 2011
don't know mine is doing the same thing