I also replaced my rear bumper ford says seeing they didn't install it they are not allowed to work on it. I have done everything I can think of, I even took off the entire bumper {few hunnert ponds) and re seated every sensor (as well as marking the direction and position prior to taking off...
I have had my Bronco since 2022 bought new and waited like everyone else. Now my back-up camera goes black and my sensors beep on level ground I have seen posts about the camera but none about the sensors anyone having similar issues??