friend has a galaxy 2.3 ghia v reg he changed the brake pads and then parked it for 8 months,asked me to mot it had a quick look over and found the abs light on checked all round and found osf sensor wire broken ,changed the sensor and all 4 discs on start up the abs light goes out,but once you get to 15-20mph the light comes back on checked the rings on the front cvs and removed the rears and cleaned ,but it still does the same anyone got any ideas thanks neil