The NCAA said an investigation found Arnold failed to promote an atmosphere of compliance and also provided false or misleading information during the investigation. As a result, Arnold will receive a three-year show-cause penalty through Dec. 21, 2018.
The school previously announced it was forfeiting 36 wins between 2012 and 2014 for using ineligible players. Arnold is currently a scout with the Boston Celtics.
Arnold coached Hawaii for four seasons, compiling a 72-55 record, before he was removed as coach in October 2014.