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You’re not getting pulled over. You’re not staring at a $10,000-per-day fine. Your DMV registration doesn’t get blocked, and your trucks don’t sit idle while you scramble to fix something that should’ve been handled months ago.
That’s what compliance gets you. Not a certificate to frame—just the ability to operate without looking over your shoulder every time you see CHP or CARB enforcement.
Starting January 1, 2025, every compliance deadline requires a passing Clean Truck Check test. Miss it, and you’re not just out of compliance—you’re out of business until it’s fixed. The testing window gives you 90 days before your deadline to submit a passing result, which means you have time to address repairs if something comes back flagged. But only if you actually schedule the test.
We handle CARB emissions testing for trucks with a gross vehicle weight rating over 14,000 pounds—specifically 2013 and newer diesel engines equipped with OBD systems. If your truck doesn’t meet that criteria, this service doesn’t apply. But if it does, this is how you stay operational in California without the constant stress of wondering if today’s the day everything shuts down.
We’re a CARB-credentialed testing facility in La Verne, serving the heavy-duty trucking industry that moves through Southern California’s logistics corridor. La Verne sits right off the I-210 and State Route 57, which means you’re already passing through here if you’re hauling between the ports, inland distribution centers, or anywhere east.
We’re not trying to be everything to everyone. This service is built specifically for 2013 and newer heavy-duty diesel trucks that need OBD-based emissions testing under California’s Clean Truck Check program. That’s it. No older trucks. No light-duty vehicles. Just the segment that’s under the tightest regulatory scrutiny right now.
The testing process uses CARB-certified OBD scanning equipment, and results get submitted directly into the state compliance database. You walk out with documentation that proves your truck is legal to operate—or a clear breakdown of what needs fixing before your deadline hits.
You schedule your appointment based on your compliance deadline. Remember, you can submit a passing test up to 90 days before that deadline, so don’t wait until the last week and hope for the best.
When you arrive, we connect a CARB-certified OBD testing device to your truck’s onboard diagnostics system. This isn’t a visual inspection or a tailpipe test—it’s a data pull that checks whether your emissions control systems are functioning correctly. The scan looks for fault codes, readiness monitors, and anything that would indicate your truck is operating outside acceptable emissions parameters.
If everything checks out, the passing result gets submitted to CARB’s compliance database, and you receive documentation proving your truck met the requirements. If the scan flags an issue, you’ll get a detailed report of what needs repair. You then have until your compliance deadline to fix it and retest.
Starting in 2025, compliance deadlines shift to twice a year—every six months. That means this isn’t a one-and-done situation. It’s an ongoing requirement, and the testing frequency only increases if your truck gets flagged by CARB’s remote emissions monitoring devices that scan exhaust on California highways.
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This is CARB-compliant OBD emissions testing for heavy-duty trucks—2013 and newer diesel engines with a GVWR over 14,000 pounds. If your truck is older than 2013 or doesn’t have an OBD system, this service doesn’t apply.
California’s Clean Truck Check program is mandatory, not optional. As of October 1, 2024, emissions compliance testing went into effect. By January 1, 2025, all compliance deadlines require a passing test to stay registered and operational. The fines for non-compliance start at $1,000 and can reach $10,000 per vehicle, per day. And those aren’t scare tactics—CARB’s 2022 enforcement report showed over 8,000 cases and more than $21.5 million in citations.
La Verne’s location makes it a natural testing point for fleets running the I-210 and SR-57 corridors. You’re already in the area if you’re moving freight between the Inland Empire and LA County, which means testing here doesn’t require a detour or major schedule disruption.
The testing itself takes the time it takes—usually under an hour if there are no complications. You’re not dropping your truck off for days. You’re getting a scan, a result, and documentation that either clears you for operation or tells you exactly what needs attention before your deadline.
You get a detailed report showing exactly what triggered the failure—usually fault codes or readiness monitor issues detected during the OBD scan. That report tells you what needs repair, and you have until your compliance deadline to fix it and come back for a retest.
The 90-day testing window exists specifically for this reason. If you test early and something comes back flagged, you have time to address it without your truck sitting idle or your registration getting blocked. But if you wait until the last minute and fail, you’re now racing the clock to get repairs done and retested before CARB or CHP pulls you off the road.
Failures aren’t uncommon, especially for trucks with higher mileage or deferred maintenance. The OBD system is constantly monitoring emissions controls, and if something’s not functioning correctly—even if the truck seems to run fine—it’ll show up in the scan. Getting ahead of your deadline is the only way to avoid a crisis if repairs are needed.
Starting in 2025, your truck will have two compliance deadlines per year—one every six months. Each deadline requires a passing Clean Truck Check test to stay registered and legal to operate in California.
If your truck gets flagged by CARB’s remote emissions monitoring devices (the scanners set up on highways that read exhaust emissions as you drive by), your testing frequency can increase to four times per year. That’s not a punishment—it’s a targeted enforcement measure for trucks that are showing signs of being high emitters.
Right now, the immediate concern is making sure you’re compliant by your first deadline. CARB assigns deadlines based on your truck’s VIN and registration, so you need to check your specific date in the state’s compliance database. Missing a deadline means your registration can be blocked, and you’ll face fines that compound daily until you’re back in compliance.
No. This service is only for 2013 and newer diesel engines equipped with OBD systems. If your truck is a 2012 or older model, it doesn’t fall under the Clean Truck Check program’s OBD testing requirements.
The 2013 cutoff isn’t arbitrary—it’s based on when OBD systems became standard in heavy-duty diesel engines, which allows for the type of electronic diagnostics CARB requires. Older trucks may still be subject to other CARB regulations (like the Truck and Bus Rule), but they’re not part of this specific emissions testing program.
If you’re running a mixed fleet with both older and newer trucks, only the 2013+ models need this testing. But make sure you’re clear on what other compliance requirements apply to your older equipment, because CARB has multiple overlapping programs, and it’s easy to assume you’re covered when you’re not.
Yes, and you should. CARB allows you to submit a passing test up to 90 days before your compliance deadline, which gives you a buffer if repairs are needed.
Testing early is the smartest move you can make. If your truck passes, you’re done—documented and compliant with months to spare. If it fails, you now have 90 days to get it repaired and retested without the pressure of an imminent deadline or the risk of getting pulled off the road.
Most compliance failures happen because operators wait until the last week, fail the test, and then realize they need parts, shop availability, and time they don’t have. The testing window exists to prevent that exact scenario, but only if you actually use it. Waiting until your deadline is already here means you’re gambling with your ability to operate.
You’ll receive a compliance certificate showing your truck passed the CARB emissions test, along with confirmation that the result was submitted to the state’s compliance database. That documentation is your proof of compliance if you’re ever stopped by CHP or audited by CARB enforcement.
The passing result is tied to your truck’s VIN and gets logged in California’s system, so your compliance status is trackable by regulators in real time. You’re not relying on a piece of paper alone—the state already knows you’re compliant before you leave our facility.
Keep a copy of your certificate in the truck. While the digital record is the official source, having physical documentation on hand during roadside inspections speeds up the process and shows you’re on top of your compliance obligations. It’s also useful if you’re working with shippers who require proof of compliance before they’ll contract with you—non-compliant carriers expose shippers to fines up to $10,000, so many won’t take the risk.
We’re located in La Verne, California, right off the I-210 and State Route 57 corridor. If you’re running freight through Southern California’s logistics network, you’re likely already passing through this area.
Scheduling depends on your compliance deadline and current availability. The earlier you book relative to your deadline, the more flexibility you’ll have. Waiting until the final weeks of your compliance window means you’re competing with everyone else who procrastinated, and appointment availability tightens up fast.
When you call to schedule, have your truck’s VIN, model year, and compliance deadline ready. That information determines eligibility and helps confirm your truck qualifies for OBD-based testing under the Clean Truck Check program. If your truck doesn’t meet the 2013+ diesel requirement, we’ll let you know upfront so you’re not wasting time.
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