check engine light on for month, now off. does it go off after a time period or did the problem solve itself?
Sometimes certain codes will reset after so many starts (or cycles)l. Nothing in or on a vehicle fixes itself.
Agree,may have been a lose wire on a sensor,or a sensor acting stupid,and if it was acting stupid,,that light will be back on shortly.
Sometimes a bad tank of gas or even a loose gas cap can set it off
Looking for a Used F-150 in your area?
CarGurus has 216,641 nationwide F-150 listings starting at $1,500.
Search Ford F-150 Questions
Ford F-150 Experts