Could be - easiest way to tell is going to be to get hold of a vcds lead and look at the diagnostics. Failing that inspect each sensor and ring in turn, including the wiring near to the wheel. Given how cheaply a lead can be picked up for I'd start with that if I was in your position, saves a lot of guessing for less than a Tenner! I finally got round to taking it in for a diagnostics - lad I know owns a lead. It came back as front right abs ring and the guy mentioned the cv joint has caused error so new cv joint he recommends, waiting on a price. Anyone know If it's a costly job?