looking for help Code-P0231
P0231- fuel pump secondary circuit low
Rugger311 had the same code and Ford was able to fix it by replacing the inertia switch due to a short. I have also read that the fuel pump wireing hareness may be causing this. i don't want to have the cab pulled. Anyone had this problem?
Replaced fuse for secondary fuel pump and truck ran fine for a few weeks, then same code again. Truck would eventauly fire up but had to clear codes several times before truck would fire. never died once the truck started. always seemed to happen after driving in the heat of the day. Black max tunned and have 126k miles on 2008 job 1 F-250
Any ideas? Thanks
Last edited by Remi19; 06-20-2011 at 08:53 AM.