Schedule CARB's Clean Truck Check testing for trucks, buses, diesel motorhomes, or entire fleets. Our credentialed technicians provide 24/7 mobile service throughout Southern California.
Clean Truck Check is a regulation designed to ensure that heavy-duty vehicles’ emissions control systems are functioning correctly. It applies to most diesel and alternative fuel heavy-duty vehicles with a gross vehicle weight rating (GVWR) over 14,000 pounds that operate on California’s public roads and highways, regardless of their registration state. Covered vehicles include public fleet vehicles (federal, state, and local government), motorcoaches, transit, shuttle, and school buses, hybrid and commercial vehicles, personal vehicles, California-registered motorhomes, single-vehicle fleets, and out-of-state vehicles (excluding motorhomes).
The testing requirements depend on whether your vehicle/engine is equipped with OBD or not.
While most vehicles have an engine model year one year older than the vehicle model year, please refer to the vehicles emissions control label (ECL) on the engine to ensure you are performing the correct test for the vehicle.
OBD-equipped vehicles (2013 and newer diesel engines and 2018 and newer alternative fuel engines) are required to undergo a scan of the engine’s OBD data using a California Air Resources Board (CARB) certified OBD testing device.
Diesel non-OBD vehicles (2012 and older diesel engines) are required to complete a smoke opacity test and a visual inspection of the vehicle’s emissions control equipment, referred to in this program as the Vehicle Emissions Control Equipment Inspection. Alternative fuel non-OBD vehicles (2017 and older alternative fuel engines) are only required to complete the visual inspection and are not subject to the smoke opacity test requirement.
What are the Non-OBD smoke opacity standards?
Note: The information provided is subject to change. Please visit the CARB website to verify the most recent requirements.
Many people in the trucking industry are used to handling problems on their own. However, when it comes to CARB regulations, there’s nothing wrong with asking for a hand. Our friendly staff will help you navigate the system to keep your vehicles active and on the road. We take the headaches out of CARB compliance!
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