You have either damaged or disturbed the abs wheel speed sensor- the sensor is a push fit behind the brake disc-you will see a black wire- trace that to the disc and the other way to the 2 pin plug (behind the arch liner) if re seating it does not work get another from a scrappy about £10. After you drive a few miles the serv and abs will go out. hint...any side sensor wire will do. post a reply how you got on.
david, May 2011