DTC codes

[Dozer FX4]

I just looked and have the following codes. Could someone let me know what these are please?

P0606
P0678
P1378
V0155
V0100

The truck runs and starts great still. Thank you in advance.

[SuperCrutyPS]

Code - Error - Probable Cause

P0606 - PCM processor fault - Internal PCM failure
P0678 - Glow plug #8 circuit failure - Circuit/connector failure, failed glow plug, failed GPCM, PCM
P1378 - Low FICM Voltage - ??

I'm not finding V0155 or V0100.

[Dozer FX4]

What is the PCM processor fault?

[Dozer FX4]

I forgot to mention that I am running a street tune from Innovative. Would this have anything to do with the codes?

[Lilpooh]

There are no "V" codes, their are only "B,C,P,and U". Maybe the "U" looks like a "V".

http://www.dieseltalk.com/support/DTC.pdf

[SuperCrutyPS]

Specifically? In general, it means your PCM could be flaking out on you.

[bismic]

First, I would make sure the batteries are fully charged and load test good (individually)

[Dozer FX4]

Ok, I will get the batteries tested tonight and check the FICM in the morning.

[Dozer FX4]

The batteries both tested 100%. I checked the voltage of the FICM this morning and it was between 47.1-47.6 with key on and 47.5 with the truck running. I believe this is within spec. Why would it still throw the FICM low voltage code?

[Lilpooh]

I've read where, even with seeing 47-48v, the FICM can still be bad. Maybe Bismic can chime in with more detail.