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If your truck is a 2013 or newer diesel with a gross vehicle weight rating over 14,000 pounds, California requires you to pass a Clean Truck Check emissions test twice a year. Miss it, and the DMV puts a registration hold on your vehicle. That means your truck sits. Your jobs get delayed. Your revenue stops.
We come to you in Azusa and surrounding areas with mobile CARB emissions testing. You schedule a time that works. We run the OBD scan on-site. We submit your passing results directly to CARB the same day. You get your compliance certificate and move on.
This isn’t for older trucks or lighter vehicles. It’s specifically for model year 2013 and newer heavy-duty diesels over 14,000 pounds GVWR. If that’s what you’re running, this is what you need to stay compliant and keep your registration active.
We’re a CARB-credentialed testing provider serving Azusa, CA and the greater Los Angeles County area. We’re licensed by the state of California, insured (which most mobile testers aren’t), and hold TSA clearance for airport and port terminal access.
We’ve worked with trucking companies, fleet operators, construction outfits, and independent owner-operators throughout the San Gabriel Valley. Azusa sits right in the heart of Southern California’s logistics corridor, and we understand what’s at stake when compliance deadlines hit. You need someone who shows up, knows the process, and gets it done right the first time.
That’s what we do. No runaround. No surprises.
First, you reach out and schedule a time that fits your operation. We bring the equipment to your yard, job site, or wherever your truck is parked in the Azusa area.
When we arrive, we plug into your truck’s OBD system and run the emissions compliance scan. This is a quick process for 2013 and newer diesel engines—no smoke test, no dynamometer, just a data pull from your onboard diagnostics. If your truck passes, we submit the results to CARB’s CTC-VIS system that same day.
You’ll receive your Clean Truck Check certificate, and your compliance is recorded with the state. If there’s an issue, we’ll walk you through what needs attention before you retest. Most trucks pass on the first scan if they’ve been maintained properly.
The test is valid for six months, and you’ll need to retest before your next deadline to avoid a registration hold. We can help you track those dates and set up your next appointment in advance so you’re never scrambling at the last minute.
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You get mobile service at your location in Azusa or nearby cities. No need to drive your semi truck to a brick-and-mortar smog station or take your rig out of service for half a day.
We perform the OBD emissions scan using CARB-approved equipment, and we’re trained and credentialed to submit your test results directly into the state’s compliance database. You’ll receive your official Clean Truck Check certificate once the test is complete and passing.
We also help you navigate the CTC-VIS portal if you need to check your compliance status, pay fees, or pull records. A lot of operators in the Azusa area run multiple trucks, and keeping track of deadlines across a fleet gets messy fast. We’ll work with you to stay ahead of it.
This service applies only to heavy-duty diesel trucks that are model year 2013 or newer and have a GVWR above 14,000 pounds. If your truck doesn’t meet those specs, this test doesn’t apply to you. If it does, this is the only way to stay compliant with California’s Clean Truck Check program and avoid penalties or registration issues.
If your truck fails the OBD emissions scan, it means the onboard diagnostics system detected an issue—usually a check engine light, an emissions-related fault code, or a problem with your diesel particulate filter or exhaust system. We’ll give you a detailed breakdown of what triggered the failure.
From there, you’ll need to get the issue repaired by a qualified mechanic. Once the repairs are done and the codes are cleared, we can come back and retest your truck. Most failures are fixable, and many are related to maintenance items that were already due.
You won’t be able to renew your registration until you submit a passing test, so it’s worth addressing any issues quickly. If you’re close to a compliance deadline and you fail, you have a narrow window to fix it and retest before the DMV puts a hold on your registration.
Most heavy-duty trucks in the Clean Truck Check program need to submit a passing emissions test twice a year—every six months. Your specific deadline depends on your vehicle’s registration and compliance schedule, which you can check in the CTC-VIS portal.
CARB allows you to submit a passing test up to 90 days before your deadline, so if you know your date is coming up, you can get ahead of it. That’s especially useful if you’re running a tight schedule or your truck is out on long hauls.
If you miss your deadline, the DMV will place a registration hold on your vehicle. That means you can’t renew your registration, and technically, you’re not supposed to operate the truck until you’re back in compliance. For owner-operators and fleets in Azusa, that’s a costly mistake. Staying on top of your testing schedule is the easiest way to avoid it.
No. The Clean Truck Check program only applies to heavy-duty diesel trucks that are model year 2013 or newer and have a gross vehicle weight rating over 14,000 pounds. If your truck is older than 2013 or weighs less than 14,000 pounds GVWR, this program doesn’t apply to you.
The reason for the 2013 cutoff is that those trucks are equipped with onboard diagnostics systems that can be scanned electronically. Older trucks fall under different emissions rules, and lighter vehicles aren’t part of the heavy-duty compliance program.
If you’re not sure whether your truck qualifies, check your registration or the vehicle’s door placard for the GVWR. You can also look up your vehicle in the CTC-VIS system using your VIN. If you’re running a 2013 or newer diesel over 14,000 pounds in California, you’re required to participate in this program.
No. Clean Truck Check testing has to be performed by a CARB-credentialed tester who’s completed the state’s training and is authorized to submit results into the CTC-VIS system. Not all smog stations are set up for heavy-duty OBD testing, and not all techs are credentialed for this specific program.
That’s one reason mobile testing has become so popular in the Azusa area. Instead of hunting down a facility that can handle your truck, we bring the equipment to you. It saves time, eliminates the hassle of driving a semi to a shop, and gets you back to work faster.
You’ll want to make sure whoever tests your truck is actually credentialed. If the test isn’t submitted correctly or the tester isn’t authorized, it won’t count toward your compliance, and you’ll still be on the hook for a valid test before your deadline.
CTC-VIS stands for Clean Truck Check Vehicle Information System. It’s the online portal CARB uses to track compliance for every heavy-duty truck in the program. If your truck is subject to Clean Truck Check, it’s already in the system, and you’ll need to register an account to manage your compliance.
Through CTC-VIS, you can check your testing deadlines, view your compliance status, pay any required fees, and download certificates. You’ll also receive notices if you’re coming up on a deadline or if you’ve fallen out of compliance.
A lot of fleet operators in Azusa use the portal to track multiple vehicles and schedule testing in batches. If you’re new to the system or find it confusing, we can walk you through it. Registration is free, and once you’re set up, it’s a helpful tool for staying on top of your emissions testing schedule and avoiding registration holds.
The cost of Clean Truck Check testing varies depending on the provider and whether you’re using mobile service or going to a facility. Mobile testing typically costs more than a shop visit, but it saves you time, fuel, and the hassle of taking your truck out of service to drive somewhere.
We price our mobile CARB emissions testing competitively for the Azusa area, and we’re transparent about what you’re paying for. You’re getting a credentialed tester, same-day results, direct submission to CARB, and the convenience of on-site service.
There’s also a compliance fee that CARB charges separately, which goes to the state—not to us. That fee is the same no matter who tests your truck. If you want an exact quote for your vehicle or your fleet, reach out and we’ll walk you through the pricing and what’s included.
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