benscab

hi, my 2002 mondeo 1.8 petrol zetec has developed a problem. the abs light stays on all the time. i did the dashboard diagnostic thingy and the only code coming up is DTC9318 which im told relates to low battery voltage, but on the same diagnostic test it showed the battery charging at 12.5v engine off and 14.1v engine on which i assume is ok ? the car went in for mot today and failed because the light was on. can anyone shed any light on what may be wrong please ? im going to check for dirt on the wheel speed sensors tomorrow but if anyone can suggest how to get this light off ant other way ( before retest is due ) please let me know. thanks. ben.