ditchy

the traction control light is on and not driving to well its going back to the garage tmrw to see if my mate can find out why the traction control isnt working.when he fitted the new gearbox he said everything looks good but he cant figure out why the traction control is playing up .could it be a sensor he hasnt thought about .its been put on his vag com but there shows a fault but not what it is or where.

has anyone got any ideas ? ive just had my gearbox changed and im having alot of problems with the traction control ,the light on the dash is on all the time and it drives like a bag of spanners squels when you go round the corner .my mate at the garage has taken it apart and he said he cant find anything wrong he has put it on his computer and its not showing any faults .any clues guys?