PDC Error

[barachello]

Sorry to go over a topic which I am sure has been covered a million times, but I am hoping someone can point me in the right direction.

I have front and rear sensors on my x3, the rears seem to work, according to the status check in INPA, however none of my fronts do (is there a particular way to test them?)

I scanned for errors, and found that it showed both front middle sensors to be faulty. I swapped them out for known working sensors, and the middle left now clicks, middle right and front right do not. However when I scan again for faults, it still only shows the front middle 2 as being faulty?

Are they wired in pairs?? As in front left and middle together, and front and middle right together??

Is it possible to permanently deactivate the front sensors and only have the rears working?? Can't see an appropriate option in INPA?

Thanks