BMW M5 Forum and M6 Forums banner

O2 sensor help

2K views 5 replies 3 participants last post by  Rosie 
#1 ·
I have been chasing a bank 1, sensor 2 pre-heater circuit inop. I checked the fuses by the DME and O2 sensor is new.

I am suspecting a break in the wiring.

Where are the wires leading to from the 02 sensor?


Sent from my iPhone using Tapatalk
 
#2 · (Edited)
Having recently done rear main seal I've had everything off and I remember how they run under the heat shield and then I think around tranny? Maybe start in that area since they're close to hot exhaust.
Also, have you removed plastic cover over wiring junction where they connect to car wiring to see if everything looks ok there?
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top