Check engine light came on after fueling vehicle today. Have never had any significant problems with this vehicle (57K miles). OBD scan reveals P219A, Air Fuel Ratio Imbalance. Google searches (already) on this specific error code don't yield much of use, other than a laundry list of what it might be. Has anyone else had this code with their C-Max, and if yes, what specific dealer service was done to correct? (After reading some of the other threads, saw where the fuel door and inlet sensors could cause CEL errors, so tried that. Also tried the 3 trip/cold start, which I saw had caused a reset of the CEL in some cases.) Ford dealer open tomorrow, but obviously, closed on Sunday. Always good to have a second *useful* opinion.
