Does anyone know what the code 0231 means ? It is a 2004 F-250 Diesel.
I looked up the code and it says fuel pump secondary circuit low.
Would this mean bad fuel pump, plugged filter maybe!
Any help would be greatly appreciated.

 

How long has it been since you've changed the filter? You do know it should be done at minimum ever 15k, every 10k if you're buying fuel at small out of the way gas stations that don't sell much diesel. First I'd suggest that you change the filters, both of them. After that have the code cleared and see if it returns. Beyond that then you're looking at an issue in the wiring or a pump that has gone south.

 

Thank you for the info I will try the filters and see what happens.