According to CVC 127315 D, it is illegal to dismantle, modify, bypass, or render inoperative any part or component of an emission control system that has been installed on a vehicle by the manufacturer or mandated by the California Air Resources Board (CARB). This may include catalytic converters, oxygen sensors, emissions control valves, or other components aimed at reducing harmful emissions from vehicles.
Violating CVC 127315 D can result in various consequences. In California, it is considered an infraction and may lead to fines, penalties, and potential legal action. Additionally, vehicles found to be non-compliant with emissions regulations may not pass the state's smog inspection, which is a requirement for vehicle registration renewal.