Just got back from the dealer with my 06 xA. My check engine light is on because there is water in my canister lines/water separator from either high pressure car washes or even rain, although I figure it's probably the car wash. They ordered parts and told me to avoid spraying around the filler door because as of now, there is no permanent fix, and I could possibly have to keep coming back for the same repair. Just thought somebody might like this info in case they have a CEL and have ruled out the gas cap.