My 2017 F-150 5.0 was cranking but refusing to start and got a P025A error code on the OBD-II so I replaced the Fuel Pump Driver Module (FPDM) with one from Auto Zone. The truck worked/drove fine for 2 weeks and then refused to start again and got the same P025A error code. Had it towed to my usual garage and they had it 3 days and couldn't find the issue. I went to pick it up and it started right up, the check engine light went out, and I drove it for another week with it doing just fine.

I got in it last week and it refused to start and got the same P025A error code on the OBD-II. I took it to a AAA shop on my buddies recommendation and they had it for 2 days and couldn't find the issue. They said that sometimes aftermarket FPDM's have issues so they put an OEM one on it but that didn't fix the issue. On the second day they said it wouldn't start and gave up on it. I went to pick it up and it started right up and I drove it home with no check engine light and with the truck running fine with no lagging or loss of power. Then this morning it started right up but the check engine light came back on with P025A again. I was able to drive it the 40 miles to work with no loss of power or performance.

I've read the Haynes manual and have checked the fuse and it's good, I've checked the relay and it's good, I've jumped the pins at the FPDM connector and the fuel pump runs just fine without the FPDM in line, I've also read the threads and the intermittent nature of this issue may suggest a faulty wire somewhere. I haven't checked the inertia switch behind the passenger kick panel yet but will do so this evening. I haven't checked voltage at the FPDM but will do so this evening. Is there anything else or anywhere else I should be checking? Appreciate the Forums help as this one is kicking my ***.

 

Have you checked the DTCs using Forscan? I know that one time I used my BlueDriver BT adapter and got a code when I was having issues with my LP lights. The BlueDriver device gave me a code, don't remember what it was, but I got my wired USB adapter and checked with Forscan. It gave me a different code, which lead me to burned out third brake light bulb and that fixed the issue with the LP lights also. Maybe Forscan will give you a different code or something else is stored that only Forscan or other similar setups can see. Just an idea.

 

Appreciate the quick response. Both shops I took it too were also getting the P025A code on their big computers so it's definitely a fuel delivery issue just stumping everyone as to what it is. I'm leaning towards an issue with a wire/wiring harness at this point.

 

Aside from fuel pump or wiring, interwebs says it could be pcm module. Just throwing out there, pcm glitches can happen with under charged battery, or failing one. What is condition of battery and are you sure it is fully charged?

 

I feel like I've read plenty of "long crank" and "intermittent hard start" threads on 5.0s. I know mine does it occasionally too. If I recall, almost every instance results in a new fuel pump fixing it. I'd probably start there if I were you.

 

She's got a new battery a couple of months before this started happening and the battery is fully charged. Appreciate the response.

 

The code description says it's an open or circuit short
When starting. Ignition On closes power to the Module to prime fuel injection for immediate starting.
Has the wiring been investigated?
The no start will continue until this is found.
It has to be the wiring or a plugup to be intermittent.
Once disturbed it will work until the next time circuit goes open again..
Good luck.