Starts addressing faults and rectifies from a distance (4)
I believe the answer is:
afar
'from a distance' is the definition.
(I've seen this before)
'starts addressing faults and rectifies' is the wordplay.
'starts' indicates taking the first letters.
The initial letters of 'addressing faults and rectifies' is 'AFAR'.
(Other definitions for afar that I've seen before include "Pull out at a distance" , "long way back" , "A long way away" , "Not in this neighbourhood" , "Unusually distant" .)