Car hesitating/missing HELP

[cmarks20]

I'm having the same issue. I got gas at a station I normally don't stop at that uses a 10% mixture of ethanol in 93 octane. A day later, I use the AC and the check engine light pops up. I turn off the AC, and the light remains. I guess it's time to take a day off of work and head to the dealership. On the bright side, it's an excuse to check out a new 911 =).