As part of my set of ready use spares I have one rear and one front known good ABS sensor on the shelf. When I get the ABS/Traction fault on POST I use Nano to identify if it is a sensor and, if so, I use a spare sensor to just plug in (not fit) in place of that sensor and check it clears the POST fault before going on to dig out the old sensor and permanently fit the new one. I then purchase a replacement for the used spare and at least check it passes POST before storing it on the shelf.
I fully support Richard’s view that a second hand OEM Wabco sensor is preferable to a new aftermarket sensor as I have had no end of problems with short lived aftermarket sensors lasting only a few thousand miles before failing for no good reason. If only I knew where to get reliable second hand sensors or whether Wabco do an OEM sensors but not in Land Rover packaging!