Not sure if this will post properly, but I have a P0156 code that keeps popping up. I've checked the wiring on the rear two sensors, and all looks good. Here's a short video of some live readings with my Actron:
Live O2 readings: 1996 Mustang V6 - YouTube
Anyhow, the sensors after the catalytics don't seem to show anything, ever.
Is there another harness coupling, I might not be seeing, before the individual connectors at each of the rear O2 sensors? If so, does anyone have a photo of the complete harness, for reference?
Thanks in advance....