I Mechanic told me that he's 99% positive ACM is bad. Have to buy new ACM since my issues was no communication error and J1939. Nothing was wrong...
Yes.
Check ACM to ECM wires first before you do anything . My mechanic changed ACM and problem didn't go away then found bad wires .
@4noReason where do you fixed your truck? I'm at Fargo, ND.
4noReason. how do you turned on/off your DEF? did you unplugged or connected to the computer inorder to turn on & off. thanks
thanks for the quick response. God Bless
Local Shop. DEF/ DPF deleted long time ago.
2012 Cascadia DD15
diagnostic codes
My truck won't go more than 55MPH. DEF blinking red. Went to the shop and they checked all harness from MCM to CPC to ACA, ACM to MCM checked all...
4noReason.... I'm having same issues. how do you solved yours?