Hello all new to the forum looking for your insight. I have a 2.0 that seems to run fine for a week or so and then it will not start. It turns over but just will not start. It is generating a code of 43. When I unplug the MFI relay then plug it back in...the car starts right up? Any ideas based this very basic info?
Thanks

 

if it's a relay you unplugged I'd say that it's going bad. If the relay gets juice and stays in one position and sticks there it could cause it or if the relay gets juice and it doesn't switch then it could cause it depends how the relay is supposed to operate but I'd start by replacing that relay and getting the codes cleared and seeing if it happens again.