Hi
My cars a GTI 8v 1995. Just before my MOT was up the ABS light came on, took it to a garage to be plugged in and came up with fault code 00287 os/r intermittent. So i changed the senser and took it back to have the fault cleared. Half way down the road from the garage the ABS light came back on, it was plugged in again same fault as before, was told to clean/check the abs ring on the back of the disk which i did. Took it back and had the fault cleared and on the way home all was well.

The next day car failed the MOT on headlights and os/r front to back brake pipe. Turns out headlights were l/h drive so had to sort some replacements and i replaced the brake pipe, when i removed the pipe from the ABS pump i put a bleed nipple in to stop any fluid loss, after bleeding the brakes the ABS light was back on but went out when i took it for a spin. At the retest while he was aligning the headlights the engine was left running, when he went to turn the engine off the ABS light was on so no MOT for me.

So i brought me a lead and got vag-com down plugged it in and came up with the same fault(00287). I then cleared the fault code and swaped the wires on the 2 rear ABS sensers, took the car for a spin and the ABS light came back on. Plugged in vag-com and guess what same fault code 00287 os/r intermittent even through i had swaped the wires over.
After doing a search on here it points to a faulty controller. Am i correct in my thinking or is there anything else i can check/do to help me solve this problem and get me car back on the road.
Sorry for the long post but wanted to put as much information in as possible to help you guys understand whats going on.