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You’re running a tight operation in East Los Angeles. The last thing you need is a truck sitting idle because of a missed CARB compliance deadline or a registration hold from the DMV. California’s Clean Truck Check program isn’t optional anymore—it’s the law for diesel trucks model year 2013 or newer with a GVWR over 14,000 pounds.
Here’s what matters: you need testing done fast, done right, and submitted to CARB immediately so your trucks stay on the road. No surprises. No downtime you can’t afford. No scrambling to find a credentialed tester who actually knows what they’re doing.
We handle the OBD testing, submit your results directly to CARB, and keep your fleet compliant with California’s heavy-duty vehicle emissions requirements. You avoid fines, registration issues, and the stress of wondering if you’re cutting it too close on your semi-annual deadline. That’s the outcome—your trucks stay legal, and your business stays moving.
All SMOG Motors serves the commercial trucking community in East Los Angeles with one focus: getting your diesel trucks through CARB compliance without the runaround. We’re CARB credentialed testers, which means we’ve completed the required training, passed the exams, and use only CARB-certified OBD testing equipment.
East Los Angeles is a major trucking corridor. You’re dealing with tight schedules, heavy traffic, and regulations that don’t care if you’re behind. We get it because we’re here, working with fleets and owner-operators who face the same pressures every day.
We’re not trying to upsell you on services you don’t need. You need CARB diesel compliance for your 2013 or newer trucks. We test them, submit the results, and you move on. That’s it.
First, you schedule your semi truck smog test with us. We can come to you with mobile service, or you bring your truck to our location in East Los Angeles—whatever works for your schedule.
When we test your truck, we’re plugging into the OBD system. This isn’t a visual inspection or a tailpipe test. It’s a direct read of your truck’s onboard diagnostics to check emissions performance. The test itself takes about 15 minutes per truck. If your truck is model year 2013 or newer and properly maintained, it should pass without issue.
Once the test is complete, we submit your results electronically to CARB right away. You’ll get confirmation that your compliance is on file, and the DMV gets notified so there’s no registration hold. You’re done for the next six months—or three months starting in 2027 when quarterly testing kicks in for OBD-equipped vehicles.
If something comes up and your truck doesn’t pass, we’ll tell you exactly what the issue is. No guessing. You get it fixed, we retest, and you’re back in compliance. The process is straightforward because it has to be.
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California CARB compliant testing applies to diesel trucks model year 2013 or newer with a GVWR over 14,000 pounds that operate on public roads. If your truck doesn’t meet those specs, this service doesn’t apply to you. We’re not going to waste your time or ours.
You’re required to test every six months. Miss that window, and CARB can issue a Notice to Submit to Testing. You’ve got 30 days to comply, or you’re looking at fines and a DMV registration hold that takes your truck out of service. CARB uses roadside monitoring and license plate readers to catch high emitters, so flying under the radar isn’t a strategy.
You also need to pay a $30 annual compliance fee through the CTC-VIS portal. That’s separate from testing, but it’s part of staying legal. We handle the testing and CARB submission. You handle the fee and keeping your trucks maintained so they pass.
East Los Angeles has one of the highest concentrations of commercial truck traffic in California. That means CARB enforcement is active here. You’re not in a low-priority area. Staying compliant isn’t just smart—it’s necessary if you want to avoid getting pulled off the road or hit with penalties that cost you more than the test ever would.
Right now, you need testing every six months if your truck is model year 2013 or newer with a GVWR over 14,000 pounds. That’s semi-annual testing, and it’s mandatory under California’s Clean Truck Check program.
Starting October 1, 2027, the requirement changes to quarterly testing—every three months—for OBD-equipped vehicles. That’s a tighter schedule, and it means you’ll need to stay on top of your compliance calendar even more than you do now.
Missing a deadline isn’t just an inconvenience. CARB can issue a Notice to Submit to Testing, and you’ve got 30 days to comply. If you don’t, the DMV puts a registration hold on your truck, and you’re not legally allowed to operate it until you’re back in compliance. That’s lost revenue, potential fines, and a mess you don’t want to deal with.
If your truck fails, we’ll tell you exactly what the OBD system flagged. It’s usually an emissions-related fault code or a system that’s not performing within CARB’s limits. You’ll need to get the issue repaired before you can retest.
Once the repair is done, bring your truck back and we’ll run the test again. If it passes, we submit the results to CARB and you’re compliant. There’s no penalty for failing the first time as long as you address the problem and retest within your compliance window.
The key is not waiting until the last minute. If you’re testing right before your deadline and your truck fails, you’re in a tight spot. Give yourself time to handle repairs if needed. Most well-maintained trucks pass on the first try, but if yours doesn’t, it’s better to know early than to scramble under pressure.
We offer mobile CARB testing service in East Los Angeles. If you’ve got multiple trucks or a tight schedule, we can come to your yard or facility and test your fleet on-site. That saves you the time and hassle of pulling trucks off routes or dealing with traffic to get to a testing location.
If you’d rather bring your truck to us, that works too. Either way, the testing process is the same—we plug into your OBD system, run the test, and submit your results to CARB immediately.
Mobile service makes sense for fleets or owner-operators who can’t afford downtime. You keep your trucks working, and we handle compliance where you are. It’s about making the process as efficient as possible so you’re not losing hours you could be billing.
No. This service only applies to diesel trucks that are model year 2013 or newer with a GVWR over 14,000 pounds. If your truck is older than 2013, it’s not subject to the Clean Truck Check OBD testing requirement.
Older trucks fall under different CARB regulations—like the Truck and Bus Regulation—but they’re not part of the semi-annual or quarterly OBD emissions testing program. If you’re running pre-2013 equipment, you don’t need this service.
It’s important to be clear about this because there’s a lot of confusion around what trucks need testing and when. If you’re not sure whether your truck qualifies, check the model year and GVWR. If it’s 2013 or newer and over 14,000 pounds, you need testing. If it’s not, you don’t.
The actual OBD test takes about 15 minutes per truck. We plug into your truck’s diagnostic system, run the emissions check, and pull the data CARB needs. It’s not a long process, and there’s no tailpipe testing or manual inspection involved.
After the test, we submit your results electronically to CARB right away. You’ll get confirmation that your compliance is on file, usually within a few minutes. The whole appointment—from pulling in to pulling out—is typically under 30 minutes unless there’s an issue.
That’s one of the benefits of OBD testing. It’s fast, it’s accurate, and it doesn’t eat up half your day. You’re in, you’re tested, you’re compliant, and you’re back to work. If you’re scheduling mobile service for multiple trucks, we can move through your fleet efficiently without tying up your operation.
Testing costs vary depending on whether you need mobile service or you’re bringing your truck to us, and whether you’re testing a single truck or a fleet. The best way to get an accurate price is to contact us directly with your specific situation.
What you should know is that the cost of testing is a lot less than the cost of non-compliance. CARB fines, DMV registration holds, and lost revenue from trucks sitting idle add up fast. You’re also required to pay a $30 annual compliance fee directly to CARB through the CTC-VIS portal—that’s separate from our testing fee.
We’re not the cheapest option out there, and that’s intentional. You’re paying for credentialed testers, CARB-certified equipment, and immediate electronic submission of your results. You’re paying for reliability and for not having to worry about whether your compliance is actually on file. That’s worth more than saving a few bucks with someone who cuts corners.
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