My car got a CEL over a month ago, I was very sure it was nothing big so I just reset it. It just came on while I was on the freeway going over 90mph.

I reset the light the next day and then fueled my car, I noticed the gas cap was not tight. When I took it off it didn't click and came off with ease. I've been over a month since then and the light never came back on. I've driven a little over a thousand miles since then, should I be ok in assuming that the lose gas cap caused the CEL. Since the light came on when I was going over 90 on the freeway, I'm ASSuming that maybe the change in speed caused a fluctuation in pressure in the gas tank because the gas cap was loose.

What do you guys think.

 

sorry for the double post.