Hey everyone I have a Freightliner M2 with a C7 engine with about 270k miles on it. Starting yesterday we are getting random check engine lights coming on when at idle and it sometimes riding rough when at idle. Soon as you get the truck up and moving the light goes out most of the time and the engine runs fine. The code that it displays is ECU 128 SID 681264. Was curious if any of you guys have run into this or have any idea what the code is telling me?
Thanks,
Jason
Freightliner M2 with C7 engine getting this fault code ECU 128 SID 681264?
Discussion in 'Freightliner Forum' started by jzcartage, Sep 27, 2016.