Jason Potter
New member
- Joined
- Nov 3, 2025
- Messages
- 1
I recently replaced head and injectors. Upon putting everything back together, engine fired up fine but I am now getting codes 3104 and 3137 plus ats fail. Never had this issue prior to repair. Is it possible that I have plugged a couple of the wiring harness connectors in the wrong spot causing it to throw these codes? Suggestions on what to look for?
