Cal. Evidence Code § 790 : California Evidence Code — Witnesses — Credibility Of Witnesses — Attacking Or Supporting Credibility — Evidence of good character Date: 31 Aug 2016 TEXT PDF Current through the 2016 Legislative Session Evidence of the good character of a witness is inadmissible to support his credibility unless evidence of his bad character has been admitted for the purpose of attacking his credibility. Ca. Evid. Code § 790