What CARB Compliant Testing Actually Means for You
Need a quick estimate?
Stay compliant and keep your trucks on the road with All Smog Motors. We specialize in CARB emissions compliance checks for heavy-duty trucks, making the process simple, fast, and stress-free. Whether you’re up against a registration deadline or received a notice to test, our certified team will handle your inspection accurately and efficiently so you can avoid penalties and costly downtime. Fill out the form below to schedule your compliance check today and keep your fleet moving without interruption.
What You Actually Get from Staying Compliant
This isn't about checking a box. It's about keeping your truck working, avoiding fines, and staying ahead of state enforcement that's only getting stricter.
This Service Only Works for Specific Trucks
How the Digital Emissions Test Works
Frequently Asked Questions
Your truck qualifies if it’s model year 2013 or newer and has a gross vehicle weight rating over 14,000 pounds. This applies to diesel and alternative fuel commercial trucks operating in California, whether you’re registered in-state or out-of-state. Older trucks require different testing methods. The service we provide is specifically for 2013 and newer trucks with OBD systems—not older models or lighter vehicles. Check the emissions control label on your engine if you’re unsure, or reach out with your VIN.
Most inspections take 10 to 15 minutes per truck. The process involves downloading data from your truck’s ECU and submitting it to the State of California. Because it’s a digital scan rather than a physical smoke test, it’s fast. For multiple trucks, we can handle 15 to 40 per day depending on your fleet size and location. The goal is keeping your trucks working, not sitting idle.
Yes. Mobile service is what we do. We travel across Los Angeles County and Riverside County to perform inspections at truck stops, yards, job sites, or wherever your trucks are parked. You don’t need to take trucks out of operation or drive to a facility. We bring certified equipment to you, complete the inspection on-site, and submit results directly to CARB. It works around your schedule and operation.
Right now, most commercial trucks need testing twice per year. Your specific deadlines depend on your registration date if you’re California-registered, or the last digit of your VIN if you’re out-of-state or exempt from DMV registration. Starting in October 2027, trucks with OBD systems will need testing four times per year. You can submit passing results up to 90 days before your deadline, so planning ahead helps avoid last-minute stress.
If your truck doesn’t pass, you’ll need emissions system repairs and then a retest before your compliance deadline. The test results show what triggered the failure, usually fault codes or OBD readiness issues. We focus strictly on inspections, not repairs, but the data we provide helps your mechanic know exactly what needs attention. Once repairs are done, we can retest to get you compliant.
Yes. We’re a Certified Credential Tester, which is the legal requirement to perform Clean Truck Check emissions inspections in California. That means we’ve completed CARB’s official training, passed the exam, and are authorized to download ECU data and submit results to the state. Not all emissions testers are certified for this program, so working with a credentialed tester ensures your results are valid and accepted by CARB and the DMV.
If your registration is blocked due to Clean Truck Check non-compliance, a passing inspection should clear it. Once we submit your passing test results to CARB, it typically takes about three business days for the DMV to process and update your vehicle’s compliance status. If you’re facing a registration hold, reach out so we can get you tested and back on the road quickly.
Yes. Any commercial truck over 14,000 pounds that operates on California roads must comply, regardless of where it’s registered. If you’re an out-of-state operator hauling into California, you’re required to register in the CTC-VIS system, pay the annual compliance fee, and pass emissions testing on the same schedule as California trucks. Compliance deadlines for out-of-state trucks are based on the last digit of your VIN.
Regular smog checks are for passenger vehicles. Clean Truck Check is California’s heavy-duty emissions program for commercial trucks over 14,000 pounds. For trucks with 2013 or newer engines, it involves scanning the onboard diagnostics system using CARB-certified equipment and submitting that data to the state. It’s faster than traditional smoke tests and focuses on ensuring your emissions control systems work properly throughout the truck’s life.
