Is there any way of resetting the fault codes on the ecu off a 04 mondeo tdci.

I have changed a few parts on the car to hopefully rectify the fault that had developed, however I assume the ecu needs to be reset to clear the fault so I can see if I have fixed it?

I tried disconnecting the battery which doesnt seem to work and dont fancy going back to ford to charge me another £60 after they couldnt find the fault saying it wasnt giving anything definate? as per my thread in the tech section.