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You’re running trucks that weigh over 14,000 pounds. Model year 2013 or newer. California requires Clean Truck Check testing, and if you miss your deadline, you’re looking at registration holds, fines that can hit $1,000 per day per vehicle, and potential “Do Not Operate” orders that ground your fleet.
That’s not a scare tactic. That’s what happens when CARB compliance slips through the cracks.
The test itself is straightforward when you work with someone who knows what they’re doing. We plug into your truck’s OBD system, pull the emissions data, and submit results directly to CARB electronically. You get a copy for your records. If your truck passes, you’re done. If there’s an issue, you know exactly what needs fixing before your deadline hits. You can test up to 90 days early, which gives you time to handle repairs without scrambling.
This isn’t about adding one more thing to your plate. It’s about keeping your trucks on the road and your business moving without interruption.
We handle Clean Truck Check testing for heavy-duty diesel and alternative fuel vehicles throughout Lakewood, CA. We’re fully credentialed by CARB, which means we’ve completed the required training, passed the exam, and we’re authorized to submit official test results that CARB and the DMV actually recognize.
We’ve been doing this long enough to know what fleet operators deal with. Lakewood sits right in the middle of major freight corridors, with easy access to the 605, 91, and 710 freeways. Your trucks are moving goods through Los Angeles County, Long Beach, and beyond. Downtime costs you money, and compliance issues cost you even more.
That’s why we offer mobile testing. We come to your yard, your shop, or wherever your trucks are parked in Lakewood. You schedule a time that works, and we show up with the equipment and credentials to get it done right.
First, we verify your truck qualifies. That means model year 2013 or newer and GVWR over 14,000 pounds. If your truck doesn’t meet both criteria, this test doesn’t apply.
Once we’re on-site, we connect to your truck’s OBD port using CARB-approved diagnostic equipment. The system pulls emissions data and checks whether your emissions control systems are functioning properly. This isn’t a visual inspection or a tailpipe test. It’s a data pull that takes minutes, not hours.
If your truck passes, we transmit the results to CARB electronically right there. You get a certificate, and you’re compliant. If something flags, we give you a detailed diagnostic report that explains what’s wrong. You’ll know whether it’s a sensor issue, a DPF problem, or something else before you take it to a repair shop.
You can submit a passing test up to 90 days before your compliance deadline. That window exists so you have time to fix issues without facing late fees or penalties. Use it.
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You get a CARB-credentialed tester who shows up with certified equipment that meets SAE J1667 specifications. We’re not cutting corners with uncertified tools or guessing at results. The equipment we use is approved by CARB’s mobile source enforcement branch, and our testing process follows the exact protocol CARB requires.
Mobile testing is available throughout Lakewood, CA for qualifying vehicles. That means we come to you instead of you pulling trucks off the road to drive somewhere. We work around your schedule, not the other way around.
Lakewood’s location makes it a hub for freight and logistics operations. You’ve got access to the Port of Long Beach, the Port of Los Angeles, and major distribution centers throughout LA County. But those ports and railyards won’t let non-compliant trucks through the gate. If you’re hauling freight in and out of those facilities, Clean Truck Check compliance isn’t optional.
We also run pre-checks if you want to identify potential issues before your official test. That’s useful if you’re not sure whether a truck will pass or if you’ve had emissions-related repairs recently. The pre-check uses the same diagnostic process, but it’s not submitted to CARB. You get the information without the risk.
Yes. The Clean Truck Check program applies to heavy-duty vehicles operating in California, regardless of where they’re registered. If your truck is model year 2013 or newer and has a GVWR over 14,000 pounds, it needs to comply with CARB testing requirements when operating in the state.
Out-of-state trucks aren’t exempt. CARB doesn’t care where your plates are from. If you’re running freight through California, your truck falls under the same rules as California-registered vehicles.
You’ll receive a Notice to Submit to Testing from CARB if your truck is due. Once you get that notice, you have 30 days to submit a passing test. Miss that deadline, and you’re facing penalties and potential registration holds if you later register the vehicle in California.
If your truck fails, you get a diagnostic report that explains what triggered the failure. Common issues include malfunctioning sensors, DPF problems, or emissions control system faults. The report tells you what needs fixing.
You’re required to make the necessary repairs and retest. CARB gives you time to handle this, but you can’t operate a failed truck indefinitely without consequences. Once repairs are done, you schedule another test. If the truck passes, the results get submitted to CARB and you’re back in compliance.
The 90-day early testing window exists for this exact reason. If you test early and something fails, you have time to fix it before your actual deadline. Waiting until the last minute means you’re scrambling to find a repair shop and hoping parts are available. That’s not a position you want to be in when your registration or port access is on the line.
Testing costs vary depending on whether you need mobile service or if you’re bringing the truck to a testing location. Mobile testing typically runs higher because we’re coming to you, but it saves you the time and fuel cost of moving your truck.
CARB also charges a compliance fee, which is $31.18 for 2025. That fee is separate from the testing service itself and goes directly to CARB. It’s required for all compliance deadlines on or after January 1, 2025.
When you’re comparing costs, factor in what downtime is worth to you. If pulling a truck off a job to drive it somewhere for testing costs you a delivery or a day’s work, mobile testing pays for itself. You’re not just paying for the test. You’re paying to keep your operation running without interruption.
Testing frequency depends on your truck’s GVWR and model year. CARB sets compliance deadlines based on those factors, and you’ll receive a Notice to Submit to Testing when your truck is due. Most trucks are tested every one to two years, but the exact schedule varies.
You can check your truck’s compliance status through CARB’s CTC-VIS portal using your VIN. That portal shows your deadline, whether you’ve submitted a passing test, and any outstanding requirements. It’s worth checking periodically so you’re not caught off guard.
Once you submit a passing test, CARB updates your compliance status in their system. That status is what the DMV checks when you renew your registration. It’s also what enforcement officers check during roadside inspections and what ports check before granting access. Staying on top of your testing schedule keeps all those doors open.
Yes, but only within the 90-day window before your compliance deadline. You can’t just test whenever you feel like it and expect CARB to accept the results. The test has to fall within that 90-day period leading up to your actual deadline.
If you’re not sure when your deadline is, check the CTC-VIS portal or contact us. We can look up your truck’s compliance status and tell you whether you’re in the testing window yet. Testing too early means the results won’t count, and you’ll have to test again later.
The 90-day window is there to give you flexibility. Use it. If you wait until the last week and your truck fails, you’re in a tough spot. Test early, and if something’s wrong, you have time to fix it without penalties or registration issues hanging over your head.
We use CARB-approved OBD diagnostic equipment that meets SAE J1667 specifications. That’s the standard CARB requires for Clean Truck Check testing. The equipment connects to your truck’s onboard diagnostics system and pulls emissions data directly from the vehicle’s computer.
This isn’t a visual inspection or a tailpipe opacity test, though we’re equipped to handle those if your truck requires it. For most 2013 and newer trucks, the OBD test is what CARB mandates. The system checks whether your emissions control components are working properly and whether any fault codes are present.
Our equipment is certified under CARB’s declaration of compliance with the mobile source enforcement branch. That means the results we generate are recognized by CARB, the DMV, and enforcement agencies. You’re not getting a test that might not hold up later. You’re getting an official Clean Truck Check that satisfies your compliance requirement.
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