2019 I/C with ISB. Air brakes 12K on the clock. No issues morning route. Started it up after washing windshield and the lights come on.
Codes are 790-2 791-2 792-2 639-2 and 12.
Where would yall start? No laptop or software. The J1939 has me leaning toward it first. If it aint something simple its going to International!!! Grrr!!
Quick Google search will help you find your codes. http://www.bendixvrc.com/itemDisplay.asp?documentID=5570 is what I came up with. Doesn't come up as a link when I copy and paste, so copy and paste it to get to the page. I found everything except the 639 code.