Eas issues need help!!!

I've got a 2016 Peterbilt 389 since December the truck has been down first time to dealership they told me EAS harness was bad replaced EAS harness solve the issue for 3 days then same issue reoccurred red light on def gauge 5mph derate took back to dealer dealer said EAS computer was bad replaced EAS computer same issue has anybody else ran into this and what is the cause I can't keep throwing money at this truck because the dealership just throws parts at it and since July I'm out $38,000 for unnecessary parts and repairs that never corrected the issue. Any info would be great thanks

 

The code that comes up is for the EAS harness or the EAS computer That's the code that continues to come up so now they're saying that the EAS harness is bad but the EAS harness was just replaced. There is no such thing as a diesel mechanic anymore. If they can't find a problem on their little laptop they have no idea where to begin. So then they start to throw parts at it which as soon as they put the parts on guess what you pay for it. I can't be the only one that's had this problem.

 

I have the old harness and the old EAS computer I checked the old harness and everything seems to be fine no chafes no breaks no cuts. It's just frustrating being an owner operator and having your truck sit. But on the good side at least every sensor's new EGRs new, turbos new, intercoolers new harness is new, EAS is new. I'm beginning to think my only option is eliminating the EAS and harness and having it deleted.

 

Ecu is waking up and sending a signal That's all been checked it just keeps coming down to they say it's either the harness or the EAS but both have been replaced.

 

I'm not bashing mechanics per say I'm bashing three Peterbilt dealers that can't seem to find the issue with the truck but because you have such infinite wisdom maybe I'll send you all the reports from paccar and Peterbilt and see if you can figure it out because obviously you're this high and mighty mechanic that can figure out anything