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California doesn’t mess around with heavy-duty vehicle compliance. If your 2013 or newer truck over 14,000 pounds GVWR isn’t tested and compliant, you’re looking at registration holds from the DMV and fines that can hit $10,000 per vehicle per day.
That’s not a scare tactic. That’s the reality of CARB diesel compliance in California right now.
The Clean Truck Check program started enforcement in October 2024. Every diesel and alternative fuel semi truck operating in California needs to pass CARB HD I/M testing to stay legal. Miss your deadline, and your truck gets flagged. Registration gets blocked. Your livelihood stops.
We handle CARB emissions testing for trucks that qualify—2013 and newer models over 14,000 pounds. You get your test done by a CARB certified smog check facility, results go straight into the state system, and you keep rolling without the stress of wondering if you’re compliant.
We serve the Covina, CA and San Gabriel Valley trucking community with California CARB compliant testing you can count on. We’re not new to emissions compliance—we’ve been in the automotive service industry long enough to know what’s at stake when regulations change.
Covina sits right in the heart of Los Angeles County, where nearly 200,000 out-of-state trucks and tens of thousands of California-registered heavy-duty vehicles operate daily. That means enforcement is tight, and the consequences for non-compliance are real.
We expanded into Clean Truck Check services because local fleet operators and owner-operators needed a reliable place to get tested without driving across the county. You’re busy. Your time matters. And you need someone who understands CARB truck regulations without making it more complicated than it needs to be.
First, confirm your truck qualifies. This service applies only to 2013 or newer model year trucks with a GVWR over 14,000 pounds. If your truck is older or lighter, this program doesn’t apply to you.
When you bring your truck in, we connect to the onboard diagnostics system and run the CARB HD I/M test. It checks your emissions controls, monitors, and readiness status. The test itself doesn’t take long—what matters is that it’s done right and submitted correctly.
Once your truck passes, we submit the results directly to the CARB database. You can submit passing results up to 90 days before your compliance deadline, which gives you time to address any issues if your truck doesn’t pass the first time.
If your truck fails, you’ll know exactly what needs fixing. You get it repaired, bring it back for a retest, and then you’re clear. The goal is simple: pass the test, stay compliant, and keep your trucks operating legally in California without registration holds or fines hanging over your head.
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You get a full CARB emissions test performed by credentialed testers using state-approved equipment. This isn’t a visual inspection or a quick check—it’s a comprehensive OBD-based test that meets California’s heavy-duty inspection and maintenance requirements.
Your test results get submitted to the CARB system the same day. That means the state knows you’re compliant, and your registration stays clear. You’ll also receive documentation showing your truck passed, which you can keep for your records or show during roadside inspections.
In Covina, CA and across Los Angeles County, enforcement is active. The California Highway Patrol and CARB inspectors are checking compliance, especially as deadlines roll around. Heavy-duty vehicles make up only 3% of vehicles on the road but produce over half of California’s smog-causing pollution—so the state is serious about enforcement.
Starting in 2025, compliance testing becomes semi-annual for most trucks. That means you’ll need to stay on top of deadlines or risk losing your ability to register and operate. The annual compliance fee is $31.18 per truck, and testing needs to happen at a CARB certified facility like ours to count.
Your truck needs testing 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 semi trucks operating in California, whether they’re registered in-state or out-of-state.
If your truck is older than 2013 or weighs less than 14,000 pounds, it’s not subject to the Clean Truck Check program. But if you’re running a newer heavy-duty truck in California, compliance isn’t optional.
The program affects around 36,900 California-registered trucks and as many as 192,400 out-of-state trucks. Enforcement started in October 2024, and all compliance deadlines from January 1, 2025 onward require passing test results submitted to CARB.
If your truck fails, you’ll get a report showing exactly what triggered the failure. Usually it’s an emissions control issue, a monitor that isn’t ready, or a fault code in the OBD system.
You’ll need to get the issue repaired and then bring your truck back for a retest. The good news is you can submit passing results up to 90 days before your compliance deadline, so you have time to fix problems without missing your deadline.
If you don’t get your truck compliant by the deadline, the DMV will block your registration renewal. You’ll also face enforcement action if you’re caught operating a non-compliant truck, which can mean fines up to $10,000 per vehicle per day. It’s not worth the risk—get it tested, get it fixed if needed, and stay legal.
Right now, your first compliance deadline depends on your truck’s registration renewal date. Once the program is fully phased in starting in 2025, most trucks will need testing twice a year—that’s semi-annual compliance.
You can submit passing test results up to 90 days before your deadline, which gives you flexibility to schedule testing when it works for your operation. Just don’t wait until the last minute, because if your truck fails, you’ll need time to get repairs done and retest.
The state tracks everything through the CARB database, so your test results need to be submitted by a certified facility like ours. Keep your own records too, especially if you operate across state lines and need to show proof of compliance during inspections.
No. Clean Truck Check testing has to be done at a CARB certified facility with credentialed testers. Not every smog shop can perform this test—it requires specific equipment, training, and state approval.
We’re certified to perform CARB HD I/M testing for qualifying trucks in Covina, CA. We submit results directly to the state system, which is required for your truck to show as compliant in the CARB database.
If you go to a facility that isn’t certified, your test won’t count. You’ll waste time and money, and you’ll still need to get tested again at an approved location. Make sure the facility you choose is CARB certified before you schedule your appointment.
Testing costs vary by facility, but you’re also required to pay an annual compliance fee of $31.18 per truck to CARB starting in 2025. That fee is separate from the testing cost itself.
The cost of the test depends on the facility and whether your truck passes on the first attempt. If your truck fails and needs repairs, you’ll have additional costs for the repair work and a retest.
What you’re really paying for is staying legal. Compare the cost of testing to the cost of a $10,000 per day fine or losing your ability to register your truck. Compliance testing is a small price to pay to protect your business and keep your trucks on the road without interruption.
Bring your vehicle registration and any documentation showing your truck’s model year and GVWR. If you’ve had recent repairs done to emissions-related components, bring those records too—they can help if there are any questions about readiness monitors.
Make sure your truck’s check engine light isn’t on before you come in. If there are active fault codes, your truck will fail the test automatically. Get those addressed first, then schedule your Clean Truck Check test.
If you’re an out-of-state operator, bring proof that your truck operates in California regularly. The state tracks compliance for both California-registered trucks and out-of-state trucks that do business here, so you’ll need to show you’re subject to the program.
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