When you vagcom it does it show "Terminal 30 low voltage"? It didn't show any ABS faults for mine when we ran a check but it did show Terminal 30 low voltage, with a bit of interweb surfing this comes back as a fault in the ABS ECU..... I suppose BBA will have checked that though? It was so much easier when you could rip the whole ABS system out & still get an MOT!