I have a 2004 ford 6.0 that have installed a new hpop had the ficm redone and now it wont start the only code I get is the u0105 lost commo with ficm. I have took the wiring harness off and checked all wires and replaced the ficm plugs. When I redid the harness the truck seemed to hit twice and then nothing and back to the u0105 code. Has anyone ever ran into this problem?

Thanks
Alton

 

You either have a FICM, PCM, or a circuit problem. You need to start checking your harnesses CLOSELY.

 

yep. sounds like a wiring issue. maybe a loose connection somewhere.

 

who fixed the ficm?

 

maybe it might be glow plug relay module? i believe the ficm also has a harness which will plug into it, and if tat aint right, i dont think she'll fire up either.

 

What did you ever come up with on this? I am having the same problem

 

Kinda quiet on that front. Haven't heard anything yet.

 

Man, I hate it when someone posts a problem and then doesn't follow up on it!

 

Lol. I'm sure we are all used to it.