P0960 Disqualification of a trial judge occurs when the facts creating disqualification arise, and any decision thereafter made by the judge is a nullity.
CHRISTIE v CITY OF EL CENTRO (Disqualified Judge) 135 CA4 767 [See: CCP 170.1; Betz v Pankow 16 CA4 931]
No guarantees.
Always check current status of cases before citing them.