2006 6mt G coupe. 22,000 miles, completely bone stock.
I am cruising on the interstate and my SES light came on. Anyone have any ideas before I take it in to get the codes pulled?

Car is stock, no problems up to this point. I am thinking about unhooking the battery for 24hrs?

 

Take it to the dealer, it's under warranty. Something is definitely not right. Could also be a loose gas cap. Did you recently fill up? If so, tighten it up and after a few drive cycles, it should turn off.