For the last 10 months, I've had a persistent P301 engine code (cylinder 1 Misfire). I've taken my 2013 C-Max SE into the Ford dealership and Firestone. Both service mechanics could not get the fault to repeat as it only happens periodically (?). Since then, I've replaced the spark plugs, the coil packs, had a fuel system cleaning, and had the the fuel pump checked - all seems well.
Could this be a software issue?
Help!
-ACB