Park Assist retrofit with a frame chop

[Aberk]

I chopped the frame about 18" and I am attempting to retrofit the park assist sensors. When I first did the chop and winch plate and installed everything it all worked, but I would get intermittent errors saying service the PA while driving fwd, but it almost always worked while in reverse. Eventually I took everything apart to paint and when I reassembled everything the PA error would never go away. I used AlphaOBD to check the code (B1296 - inner passenger sensor) and I traced the issue to what I believed was a faulty rear sensor harness. I replaced the harness and the error went away. After a week of driving, the service PA error came back (B1297 - outer passenger sensor) this time. I ran through my same wire harness validation steps and everything seems to checkout, so I don't think my new harness is the issue. So now I am stumped at why I am getting the error. I am pretty sure the sensors are all facing the correct direction based on how they were installed in the original bumpr.

Anybody with some more insight in to how this system works(I thought it seemed simple enough)? Are there any settings or resets I can do to relearn it (I have a AlphaOBD and a Tazer)?

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