2018 Peterbilt 579 issue.
I’m getting several fault codes, but J1939 has periodically popped up. Dealer said could be wiring harness. I’m wondering what the cost of these are as Dealer said they’re a pretty penny. I have it at the local Peterbilt dealer now.
2018 Peterbilt 579, J 1939 code periodically comes up on data link?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Chuck579, Jan 25, 2023.