Thread: Bosch Park Pilot Error Codes

My Disco had an aftermarket parking assist thing fitted when I bought it. I'm not sure what model it is but from what I have found so far I think it is a Bosch Park Pilot. (It has got two sensors if that makes a difference)

Anyway, it has stopped operating properly. When I select reverse there is a continuous beep for a few seconds accompanied by two red LEDs. Then a single red LED and a shorter beep. Then a second or two later a series of short beeps accompanied by two amber LEDs.

Does anyone have any idea how to interpret these codes? I can't find anything helpful on the internet but I'm not entirely sure what I am supposed to be looking for.

I've attached a photo of one of the sensors in case it helps.

Thanks in advance!