I have problem with front parking sensors. Once the alrm comes on it continues with a continuous beep even if there are on obstructions in front of the car. The service station attended to it and informed that they dont see any problem or errors.

Request help in understanding/solving this problem

sound broken to me as mine have done the same. does it have a continous beep for around 4 seconds which then stops and the parking sensor light flashes?

This is what mine did and they replaced it as it had a faulty ground. it does show up on vag comm so maybe you have a different problem if there are no codes showing?

Are the sensors dirty?