Hear from Our Customers
You’re running a business, not chasing paperwork. But if your 2013 or newer truck over 14,000 pounds GVWR isn’t tested under California’s Clean Truck Check program, you’re looking at registration holds, fines up to $10,000 per vehicle per day, and potential “Do Not Operate” orders that shut you down completely.
The state isn’t messing around anymore. Starting January 2025, CARB is actively flagging non-compliant vehicles and sending notices with 30-day deadlines. Miss it, and your truck can’t be registered. Can’t be registered means it can’t legally operate.
We handle the OBD testing at your location in San Fernando so you don’t lose hours driving to a facility and waiting in line. You get same-day results transmitted directly to CARB’s system, your compliance fee handled, and proof that keeps the DMV off your back. Your trucks stay on the road, your drivers stay productive, and you avoid the expensive mess of playing catch-up after a violation.
All SMOG Motors isn’t your typical smog shop trying to handle every vehicle that rolls through. We’re CARB credentialed testers focused exclusively on 2013 and newer heavy-duty trucks that fall under the Clean Truck Check regulations.
That means we know the OBD protocols—SAE J1939 and J1979—and we use only CARB-certified testing equipment that connects directly to the CTC-VIS database. We’re not learning on your truck. We’ve been serving commercial operators across the San Fernando Valley who need compliance done right the first time.
San Fernando’s industrial corridors and logistics operations mean there’s a high concentration of heavy-duty vehicles here. We built our service around that reality. You need someone who understands CARB’s requirements, shows up when scheduled, and doesn’t waste your time with guesswork.
You schedule a time that works for your operation. We show up at your San Fernando location with CARB-certified OBD testing equipment. The actual scan takes minutes, not hours.
We connect to your truck’s onboard diagnostics system and pull the emissions data CARB requires. If your vehicle passes, we transmit the results directly into the Clean Truck Check Vehicle Inspection System. You get documentation on the spot, and your compliance status updates with both CARB and the DMV.
If there’s an issue flagged during the scan, you’ll know immediately what needs attention before you’re hit with a notice or penalty. We don’t just run the test and disappear—we explain what the data means and what your next steps are.
The $31.18 annual compliance fee for 2025 gets handled as part of the process. You’re not chasing down separate payments or portals. Once you’re compliant, you’re clear for the next testing cycle—currently semi-annual, moving to quarterly in October 2027.
Ready to get started?
You’re not just getting a scan. You’re getting a credentialed tester who passed CARB’s exam, uses approved equipment, and knows how to navigate the CTC-VIS portal so your results don’t get lost in the system.
San Fernando’s commercial vehicle operators deal with tight schedules and thin margins. Downtime costs you $300 to $900 per vehicle when you factor in lost productivity. Mobile testing eliminates that. We come to your yard, your job site, or wherever your trucks are parked.
California’s Clean Truck Check program is designed to catch high-emitting diesel vehicles before they cause more damage. CARB estimates this program will prevent 7,500 air quality-related deaths and deliver $75 billion in health benefits. That’s not just regulatory talk—it’s why enforcement is real and penalties are steep.
If you operate multiple trucks, we can test your entire fleet in one visit. Faster, more efficient, and you’re not juggling appointments across different days. You also avoid the risk of using non-compliant testers who cut corners or don’t carry proper insurance, which can void your test results and leave you exposed.
If your truck is model year 2013 or newer and has a gross vehicle weight rating over 14,000 pounds, yes. This applies to diesel and diesel-hybrid vehicles registered in California, including those operating in San Fernando and throughout Los Angeles County.
CARB’s Clean Truck Check program became mandatory in 2023, and enforcement ramped up significantly in 2025. If your vehicle falls into this category and you haven’t completed testing, you’re likely already flagged in the system or will be soon.
The test isn’t optional, and it’s not something you can delay indefinitely. Once you receive a Notice to Submit to Testing, you have 30 calendar days to get it done. After that, the DMV can place a registration hold, and you’re looking at fines and operational restrictions that cost far more than the test itself.
You’ll face registration holds first. That means your truck can’t be renewed, and technically, it can’t operate legally on California roads. If you continue operating a non-compliant vehicle, CARB can issue fines up to $10,000 per vehicle per day.
In more serious cases, you could receive a “Do Not Operate” order, which is exactly what it sounds like. Your truck gets sidelined until you’re compliant. For owner-operators or small fleets, that’s a business-ending scenario.
CARB isn’t bluffing. They’re actively monitoring vehicles through the CTC-VIS system and cross-referencing DMV records. If you’re operating in San Fernando or anywhere in California with a 2013+ heavy-duty diesel, you’re on their radar. The cost of compliance is a fraction of what you’ll pay in penalties, lost revenue, and legal headaches if you ignore it.
The actual OBD scan takes about 10 to 15 minutes per vehicle. We’re not talking about a multi-hour process. We connect the CARB-certified testing device to your truck’s diagnostic port, pull the emissions data, and transmit it directly to the state’s database.
If you’re testing multiple trucks, we can move through your fleet efficiently in a single visit. Compare that to driving each truck to a testing facility, waiting in line, and losing 1 to 3 hours per vehicle. That’s $300 to $900 in downtime costs per truck when you factor in driver wages and lost productivity.
Mobile testing eliminates all of that. You schedule a time, we show up at your San Fernando location, and your trucks stay exactly where they need to be. You get same-day results and compliance documentation without disrupting your operation.
No. Regular smog shops aren’t equipped or certified for Clean Truck Check testing. This program requires CARB credentialed testers who’ve completed specific training and passed the state’s exam. The equipment also has to be CARB-certified and capable of handling the OBD protocols used in 2013+ heavy-duty diesels.
A lot of shops will tell you they can do it, but if they’re not properly credentialed or using approved equipment, your test results won’t be valid. That means you’ve wasted time and money, and you’re still non-compliant in CARB’s system.
We’re credentialed specifically for this program. Our equipment connects directly to the CTC-VIS database, and we know how to handle both SAE J1939 and J1979 protocols. You’re not getting a generic smog test—you’re getting the exact compliance testing CARB requires for heavy-duty vehicles operating in California.
The state-mandated compliance fee is $31.18 per vehicle for 2025. That’s separate from the testing service itself. Our testing fee depends on whether you’re bringing in a single truck or scheduling a fleet visit, but we keep pricing straightforward and competitive.
Mobile service costs more than a stationary shop because we’re coming to you, but the trade-off is that you’re not losing hours of productivity per vehicle. When you calculate the cost of downtime—driver wages, missed deliveries, idle equipment—mobile testing usually saves you money overall.
We’ll give you a clear quote upfront based on your situation. No surprises, no hidden fees. You’ll know exactly what you’re paying for and what you’re getting in return. If you’re managing a fleet in San Fernando, we can also discuss volume pricing that makes compliance easier on your budget.
Right now, testing is required semi-annually—twice a year. Starting in October 2027, CARB is shifting to quarterly testing for OBD-equipped vehicles, which means you’ll need to test every three months.
That’s a significant increase in compliance frequency, and it’s designed to catch emissions issues faster. For fleet operators, it also means you need a testing partner who can handle regular visits without disrupting your schedule.
We’re already set up for the transition to quarterly testing. Once 2027 hits, you’ll need a system in place to stay on top of deadlines, and we can help you build that into your maintenance schedule. Miss a testing window, and you’re back to dealing with notices, holds, and penalties. Stay ahead of it, and compliance becomes just another routine part of running your operation.
Local Resources
Useful Links
Other Services we provide in San Fernando
