California Code, Vehicle Code - VEH § 13352.3

(a) Notwithstanding any other provision of law, except subdivisions (b), (c), and (d) of Section 13352 and Sections 13367 and 23521, the department immediately shall revoke the privilege of any person to operate a motor vehicle upon receipt of a duly certified abstract of the record of any court showing that the person was convicted of a violation of Section 23152 or 23153 while under 18 years of age, or upon receipt of a report of a judge of the juvenile court, a juvenile hearing officer, or a referee of a juvenile court showing that the person has been found to have committed a violation of Section 23152 or 23153.

(b) The term of the revocation shall be until the person reaches 18 years of age, for one year, or for the period prescribed for restriction, suspension, or revocation specified in subdivision (a) of Section 13352, whichever is longer. The privilege may not be reinstated until the person gives proof of financial responsibility as defined in Section 16430.