actually it is.... Ok from the beginning, My car failed its MOT the other day because some dirty cowboy had removed the ABS bulb due to a problem with the system. after fitting a bulb and checking the fuse I done the diagnostic checks it gave me fault code 31 and 32 which is the 2 front wheel speed sensors so I removed them and clean all dirt and metal filings stuck to the magnets and pushed the cv joints back and cleaned the cogs, put it back together and it was only reading 32 which is the n/s wheel speed sensor so instead of running out and spending 135 quid on a new sensor I tried swapping