In August, the "Check Engine" light came on my 2013 FFH SE that I have put all 212,000 miles on. I had a local auto parts store check the code and they told me it was a fuel air mixture code. So off to my local dealership to get this taken care of. The issue was a misfire on cyl. 2 and 3. My local dealership changed out plugs and wires. The light stayed cleared for ~90 miles, then came back, same code - misfire on cylinder 3. They thought it was a bad plug, so they replace the new plug they'd just put in cyl. 3. ~160 miles later, the light is back on. This time, they changed the coil unit on cyl. 3 per the Ford guidance. Less than 1 day, the light is back on with a misfire on cylinder 3. All told, the dealership had the car for over a week in this period. Also, my mileage was consistently over 40 MPG. After leaving the car with the dealership for another week, where in they tried swapping injectors with another cylinder which had no effect, and all other testing that the Ford system told them to try. After doing something with wiring and the light stayed off. After another 300-400 miles driven, the light came back, so we followed the Ford advice and changed the injector. I didn't even get out of the parking lot and the light came back. This time it is P219A - Fuel Air Mixture. The dealership has done and tried everything that Ford has recommended. A Case has been filed with Ford, but the dealership is having a hard time getting any technical support from Ford or Ford Engineering. SUGGESTIONS?
