Audi Parking Sensor problem

[Eetvark]

Hey. I have an audi a7 4g 2011, where the parking aid does not work. Obd11 gives "Left rear park assist sensor. open circuit/short circuit to ground. Fault code: B107614”. The parking sensor was replaced with a working one, but it still doesn't work. When you put the reverse on, the parking aid beeps for a long time, but nothing is shown on the screen. All other sensors give a pulse. What are the chances that something won't work? Can one of the parking sensors have a blown fuse? Do I have to remove the rear bumper to get the parking aid to work? Thanks.

[Valpo A7]

You probably have a broken wire somewhere between the sensor and the controller.

The controller should be in the back right (passenger side) area underneath that little shelf with the cargo net.