check engine light on...check engine light off!
About 400 miles back my check engine light went on.....coincidently my fuel gauge was nearly empty and I had unwittingly put E15 in my car at my last fill-up. I also notice that the car periodically was shifting erratically.
So I finally took it to Autozone for a freebe code read..they told me it was my "shifter solenoid" which would mean potentially expensive transmission work.
Yesterday on my drive home from work...the check engine light WENT OUT!!.
So Downloader is right...a few drive cycles and the problem corrected itself. Actually I made sure I fueled up with non-ethanol gas and I think that the computer finally sense it and self-adjusted.