Still Not Starting. I'm lost.

[BigRedPowerstroke23]

My truck (2003 6.0) had rough idle and intermediate powerloss for about 6 months. Then it stopped running after throwing these codes.
P0336 - CKP crank position sensor A circuit/range performance
P0278 - Injector 6 low contribution/balance
P0341 - CMP cam position sensor circuit performance
P1378 - FICM voltage low
P2290 - ICP too low
U0105 - Lost communication with FICM
P006a - MAF code
It started out with p1378 wich is low voltage ficm and then within a couple days all the above. It cranks just fine but doesn't start now. I replaced the cps sensor,ficm and both wiring harnesses that connect to the ficm. Still no start. And it doesn't register any codes. I would start checking fuel pressure except it showed the ficm codes. Any help would be much appreciated. Thanks. It does have edge with platinum on it but I run it on mileage almost all the time. Please help.

[gtnit]

when you put the new ficm in did you get it flashed to your pcm

[Banshee365]

Did you buy the FICM used off of a running truck or brand new? If it's new and you havn't had it programmed, it's blank.

[BigRedPowerstroke23]

It came off a low mileage 2003 6.0. Therefore it didn't neednto be flashed.

[Evil Eye]

Sounds like a sync problem between the PCM and FICM.