Is led astray and doesn't work (5)
I believe the answer is:
idles
'doesn't work' is the definition.
(I've seen this in another clue)
'is led astray' is the wordplay.
'astray' indicates an anagram.
'is'+'led'='isled'
'isled' is an anagram of 'IDLES'.
'and' is the link.
(Other definitions for idles that I've seen before include "Lazes about, just ticks over" , "Spends time doing nothing" , "Does little, just ticks over" , "Lazes around" , "Wastes time" .)