My check engine light came on when I did not place my fule cap on after filling up, I placed the cap back on and have run through another tank of gas. The light has stayed on and is now dinging. I now have a rough idle, is it possiable I got some bad gas? If so would running some fuel additive help? Anyone had similar issues?

 

I don't think it was bad gas... The Computer needs to reset itself you might want to try unplugging the NEGATIVE terminal on your battery and leave it unplugged for about 10 min this will usually cause your cars onboard computers to reset... However if that dose not work you should take it to the dealer so they can reset it with an OBD || machine.

GOOD LUCK