X15 EGR Issue

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by north60, Apr 21, 2020.

  1. ChuckMartel

    ChuckMartel Light Load Member

    Joined:
    Jan 22, 2021
    Messages:
    160
    Thanks Received:
    94
    0
    I’ve seen partially plugged EGR coolers cause this code.
     
  2. north60

    north60 Bobtail Member

    Joined:
    Jun 13, 2019
    Messages:
    43
    Thanks Received:
    25
    0
    In case anyone is wondering, I finally fixed it. I found the issue was the EGR diff pressure sensor had wires rubbed together about 6 inches from the connector, dropping the signal voltage and making it read incorrect. fixed wiring and never seen this code again on this unit.