Quote:
Originally Posted by RocketyMan
Swapping in a whole new harness seems rather extreme.
I mean starting with simple things first. Like checking PWR, GND, communication. But i'm sure you did that already.
Might be worth doing a load test on the wiring. Maybe the JBE is compromised...
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Might have found the issue, there was a ground that was not connected to the right spot, i will try to attach a photo
Its the ground that sits right behind the windshield fluid tank, it was connected to an empty slot in the little box where the positive jumper attachment is....
just moved it last night and it started fine today, no codes. hopefully that did it but i will give it some time before writting this off as solved
EDIT - This is not my own photo, this is a base 3 series but the concept is still the same, I will post my own photo later