Goes over the faults (7)
I believe the answer is:
defects
'faults' is the definition.
('defect' can be a synonym of 'fault')
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for defects that I've seen before include "Faults" , "Abandons cause" , "defaults" , "Flaws" , "Shortcomings; changes sides" .)