Failures expected in electrical faults (12)
I believe the answer is:
shortcomings
'electrical faults' is the definition.
The definition and answer can be both human attributes as well as being plural nouns.
Maybe you can see an association between them that I can't see?
'failures expected in' is the wordplay.
I cannot quite understand how this works, but
'in' is within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for shortcomings that I've seen is " Defects (eg of character)".)