California Code, Vehicle Code - VEH § 23548

(b) In addition to subdivision (a), if the court grants probation to any person punished under Section 23546, the court may order as a condition of probation that the person participate, for at least 30 months subsequent to the underlying conviction and in a manner satisfactory to the court, in a driving-under-the-influence program licensed pursuant to Section 11836 of the Health and Safety Code. In lieu of the minimum term of imprisonment specified in subdivision (a), the court shall impose as a condition of probation under this subdivision that the person be confined in the county jail for at least 30 days but not more than one year. The court shall not order the treatment prescribed by this subdivision unless the person makes a specific request and shows good cause for the order, whether or not the person has previously completed a treatment program pursuant to paragraph (4) of subdivision (b) of Section 23542 or paragraph (4) of subdivision (b) of Section 23562.In order to enable all required persons to participate, each person shall pay the program costs commensurate with the person's ability to pay as determined pursuant to Section 11837.4 of the Health and Safety Code. No condition of probation required pursuant to this subdivision is a basis for reducing any other probation requirement in this section or Section 23600 or for avoiding the mandatory license revocation provisions of paragraph (5) of subdivision (a) of Section 13352.

(c) In addition to the provisions of Section 23600 and subdivision (a), if the court grants probation to any person punished under Section 23546 who has not previously completed a treatment program pursuant to paragraph (4) of subdivision (b) of Section 23542 or paragraph (4) of subdivision (b) of Section 23562, and unless the person is ordered to participate in and complete a driving-under-the-influence program under subdivision (b), the court shall impose as a condition of probation that the person, subsequent to the date of the current violation, enroll and participate, for at least 18 months and in a manner satisfactory to the court, in a driving-under-the-influence program licensed pursuant to Section 11836 of the Health and Safety Code, as designated by the court. The person shall complete the entire program subsequent to, and shall not be given any credit for program activities completed prior to, the date of the current violation. Any person who has previously completed a 12-month or 18-month program licensed pursuant to Section 11836 of the Health and Safety Code shall not be eligible for referral pursuant to this subdivision unless a 30-month licensed driving-under-the-influence program is not available for referral in the county of the person's residence or employment. The program shall provide for persons who cannot afford the program fee pursuant to paragraph (2) of subdivision (b) of Section 11837.4 of the Health and Safety Code in order to enable those persons to participate. No condition of probation required pursuant to this subdivision is a basis for reducing any other probation requirement in this section or Section 23600 or for avoiding the mandatory license revocation provisions of paragraph (5) of subdivision (a) of Section 13352.

(d) The court shall advise the person at the time of sentencing that the driving privilege may not be restored until the person provides proof satisfactory to the department of successful completion of a driving-under-the-influence program of the length required under this code that is licensed pursuant to Section 11836 of the Health and Safety Code.

(e) This section shall become operative on September 20, 2005.