California Code, Vehicle Code - VEH § 4000.3

(a) Except as otherwise provided in Section 44011 of the Health and Safety Code, the department shall require biennially, upon renewal of registration of any motor vehicle subject to Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code, a valid certificate of compliance issued in accordance with Section 44015 of the Health and Safety Code. The department, in consultation with the Department of Consumer Affairs, shall develop a schedule under which vehicles shall be required biennially to obtain certificates of compliance.

(b) The Department of Consumer Affairs shall provide the department with information on vehicle classes that are subject to the motor vehicle inspection and maintenance program.

(c) The department shall include any information pamphlet provided by the Department of Consumer Affairs with notification of the inspection requirement and with its renewal notices.The information pamphlet in the renewal notice shall also notify the owner of the motor vehicle of the right to have the vehicle pretested pursuant to Section 44011.3 of the Health and Safety Code.