Yesterday, got gas and the guy topped of my tank; tried to stop him to no avail. One hour later the check engine light came on. Went down to Advance Auto Parts to read the code. Code = Manafacturer Control Fuel Air Metering p115 was the fault code. I am thinking that there is either fuel in the avaporator canister or the gas cap is bad (seems unlikely). Any ideas? Thanks in advance. Bill :?