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If you run trucks in California with a GVWR over 14,000 pounds and a 2013 or newer diesel engine, you already know the state isn’t messing around anymore. The DMV is placing registration holds on non-compliant vehicles. CARB is issuing fines that can hit $10,000 per truck per day. And if your rig gets flagged, it’s grounded until you fix it.
That’s not a scare tactic. That’s what’s happening right now across the state, including here in La Mirada and throughout Los Angeles County.
The Clean Truck Check program started enforcement in October 2024. If your trucks haven’t been tested, you’re already behind. And the longer you wait, the more it’s going to cost you in penalties, lost work, and frustrated customers wondering where their freight is.
We run CARB-credentialed OBD testing that takes 15 to 30 minutes. You get your results transmitted directly to CARB the same day. No guessing. No waiting. No wondering if your registration is about to get yanked.
We serve the La Mirada area with one focus: getting commercial operators through CARB compliance without the runaround. We’re not a mobile unit that might show up late or a shop that treats your semi truck like an inconvenience.
La Mirada sits right in the heart of Southern California’s logistics corridor. Trucks move through here daily on their way to the Ports of LA and Long Beach, up the 5 and 605, across to the Inland Empire. You’re not running hobby rigs. You’re running a business. And every hour your truck sits is an hour you’re not making money.
We know what’s on the line. That’s why we keep the process fast, straightforward, and focused on keeping your fleet compliant so you can keep moving.
You bring in your truck. We plug into the OBD system using CARB-certified testing equipment. The scan pulls data directly from your engine’s onboard diagnostics to check emissions performance and system readiness.
If your truck passes, we transmit the results electronically to CARB that same day. You get a copy for your records. You’re done. The whole process takes 15 to 30 minutes.
If something flags, we’ll tell you what it is and what needs to happen next. You’ll have time to get it fixed—you can submit a passing test up to 90 days before your compliance deadline, so there’s a buffer if repairs are needed.
This isn’t a visual inspection or a guess. It’s a data-driven test tied directly to your truck’s engine computer. CARB requires it. The DMV enforces it. And we make sure it gets done right the first time so you don’t have to come back.
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This service applies only to diesel and diesel hybrid trucks with a model year of 2013 or newer and a gross vehicle weight rating over 14,000 pounds. If your truck doesn’t meet both of those criteria, this test doesn’t apply to you.
Here’s what you get: a full OBD emissions compliance test performed by a CARB-credentialed tester. Results transmitted electronically to the California Air Resources Board. A printed copy of your test results for your records. And confirmation that your vehicle meets state requirements so the DMV doesn’t put a hold on your registration.
La Mirada is surrounded by industrial zones, freight routes, and distribution centers. If you’re running trucks through this area, you’re operating in one of the most heavily regulated air quality districts in the country. The South Coast Air Quality Management District doesn’t play around, and neither does CARB.
Right now, testing is required twice a year. By October 2027, it’s going up to four times annually. That means more frequent checks, tighter windows, and less room for error. Getting ahead of it now saves you from scrambling later when enforcement ramps up even more.
If your truck doesn’t pass, you’ll get a detailed report showing exactly what flagged during the OBD scan. Most failures are tied to emissions system malfunctions, sensor issues, or readiness monitors that aren’t set.
You’ll need to get the issue repaired by a qualified mechanic. Once the repair is done, you come back for a retest. The good news is you can submit a passing test up to 90 days before your compliance deadline, so if something needs fixing, you’ve got time to handle it without getting hit with a registration hold.
Don’t ignore a failure. The DMV will place a hold on your registration if you don’t get compliant, and CARB can issue fines that add up fast. Get it fixed, get it retested, and get back on the road legally.
Yes. If your truck operates on California roads and meets the criteria—2013 or newer model year, diesel or diesel hybrid, GVWR over 14,000 pounds—you’re required to comply with the Clean Truck Check program even if your vehicle is registered in another state.
CARB’s regulations apply to nearly all heavy-duty vehicles operating in California, regardless of where they’re registered. That includes out-of-state truckers hauling freight through the state, cross-country operators, and anyone doing business here.
If you’re running California routes regularly, you need to stay compliant. The state has the authority to restrict non-compliant vehicles from operating here, and enforcement is active. Get tested before you get flagged.
Right now, trucks that fall under the Clean Truck Check program need to be tested twice a year. Your specific compliance deadlines are tied to your vehicle’s registration and the month it was manufactured.
By October 2027, the frequency increases to four times per year for OBD-equipped vehicles. That’s every 90 days. CARB is tightening the requirements because heavy-duty diesel trucks account for more than half of California’s smog-causing pollution, even though they make up only 3% of vehicles on the road.
You can check your exact deadlines through CARB’s online system, but the bottom line is this: if you’re running a 2013 or newer diesel truck over 14,000 pounds in California, you need to build this testing into your regular maintenance schedule. It’s not optional, and the penalties for missing deadlines are steep.
The actual OBD test takes about 15 to 30 minutes. We plug into your truck’s diagnostic port, run the scan, pull the emissions data, and transmit the results to CARB electronically.
You’re not sitting around for hours. This isn’t a full mechanical inspection or a visual once-over. It’s a data pull from your engine’s computer. As long as your truck’s systems are ready and there are no active faults, the process is quick.
If you’re managing a fleet, you can schedule multiple trucks back-to-back to minimize downtime. The key is planning ahead so you’re not scrambling the week before your compliance deadline. Get it done early, and you won’t have to worry about it.
The DMV will place a registration hold on your vehicle if you don’t comply. That means you can’t renew your registration until you pass the test and submit proof to CARB. Your truck is effectively grounded.
On top of that, CARB can issue fines for non-compliance. Penalties can reach up to $10,000 per vehicle per day, depending on the violation and how long it goes unresolved. The longer you wait, the worse it gets.
This isn’t a warning letter you can ignore. The state is actively enforcing this program, and the DMV started placing holds in August 2024. If your trucks aren’t compliant, you’re risking your ability to operate in California. Get tested, stay compliant, and avoid the headache.
No. The Clean Truck Check program—and the testing we provide under it—applies only to heavy-duty trucks that are model year 2013 or newer and have a gross vehicle weight rating over 14,000 pounds. If your truck doesn’t meet both of those requirements, this specific test doesn’t apply.
Older trucks and lighter vehicles may still need smog checks under California’s regular smog check program, but that’s a different test with different requirements. The Clean Truck Check is a separate CARB program specifically targeting newer heavy-duty diesel vehicles.
If you’re not sure whether your truck qualifies, check your vehicle’s model year and GVWR. Both have to meet the criteria. If they do, you need this test. If they don’t, you’re looking at a different type of compliance.
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