Help! FCAN Databus Failure

I have worked independant and dealers just the same over the course of my career. I once thought the information was limited to dealer level only too when I was indy. Everyone has access to information due to Right to repair act. Just a matter of the hoops needed to jump through and how much you have to pay for access to said information. But it is available to everyone, for all OEM's , new and old alike.

 

My fleet has access to KW and Pete ECAT and rapido.

 

Couple days late here but my 579 does exactly the same thing. Usually just turning it off for ten minutes resets and everything is fine for a couple weeks.

 

I get this intermittently only when engaging auto-start.

 

Hello

 

I have a same problem in my truck (Fcan data bus failure exterior lights) i have took my truck to peterbilt Dealorship they have charged me 12000 $ in repairs but unfortunately my problem is still not fixed they have put the new wiring harness they have replaced the NOX sensor they have put the new turbo actuator and now i am scared to go back to them because they are saying you have to pay us again to do further diagnostic on it and i don't have any more simply they are bandits and they say well we have changed what computer is telling us i have checked all the fuses underneath the cab and scam fuse box all of them are good i have no idea what to do
I am sitting home for almost 2 months i don’t know what to do i have payment for truck pending simply peterbilt Dealorship has ripped me off i really need help please anyone guide me so i can start working again thanks

 

It's the VECU that cause this . I fix this in my shop