Thanks,My bet is the Camera itself.
I think I'd try Unplugging the Connection near the Camera itself, then
plug it back in reseating it for a better connection.
Make sure the Connectors are Clean inside before plugging them back in.
Maybe it will work, maybe it won't, but you won't be out any money at this point?
Shouldn't be very hard to replace if needed, it's only one 8" to 12" wire harness with one plug.
You'll just need to Pinch the Camera Side inward to remove the camera.
Although all backup cameras are different, most feature a factory reset recess. On many models, this recess is above the switch on the back of the camera. Using a pen or paper clip, press and hold down the recess for about ten seconds. Release, and then wait for the lights to start blinking, then come back on.