Cut engine off while driving at low rpms, stop or idle on 2001 Honda Civic

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
I have an intermitten problem that shut off while I am driving at low rpms, at stop or idle but start right back up.
(1) Answer
could be a vac leak or a problem in th idle control-suggest a diagnosis for a proper repair