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Your trucks stay registered, your drivers stay on the road, and your business keeps moving. That’s what CARB compliant testing does when it’s done right.
California DMV started placing registration holds on non-compliant heavy-duty vehicles in January 2025. If your truck doesn’t have a passing Clean Truck Check test on file, it can’t be renewed. That means it can’t legally operate, and you’re losing money every day it sits.
The fines are worse. CARB can issue penalties up to $10,000 per vehicle per day for non-compliance. Roadside enforcement at weigh stations and inspection points gives CHP and CARB officers the authority to pull non-compliant trucks off the road immediately. One missed test can turn into a multi-thousand-dollar problem before you even realize what happened.
Testing through us means you get ahead of deadlines, stay compliant with semi-annual submission requirements, and protect your fleet from enforcement actions that cost you time and revenue. This isn’t about checking a box. It’s about keeping your operation running without interruption.
We serve French Valley and the surrounding Riverside County area with CARB credentialed testing for heavy-duty diesel and alternative fuel trucks. Every test is performed by our certified testers who’ve completed CARB’s training and passed the required exam.
French Valley sits in the heart of one of the busiest logistics corridors in the country. The Inland Empire handles over 562 million square feet of warehouse space, and thousands of heavy-duty trucks move through this region daily. That means compliance isn’t optional—it’s built into how business gets done here.
You’re dealing with tight delivery windows, high-mileage trucks, and regulations that change faster than most fleet managers can track. We focus exclusively on 2013 and newer trucks with GVWR over 14,000 pounds, so you’re working with someone who knows exactly what your trucks need to pass and what paperwork has to be filed with CARB.
The Clean Truck Check program requires OBD data scanning for all diesel, hybrid, and alternative fuel trucks model year 2013 or newer with GVWR over 14,000 pounds. The test pulls diagnostic data directly from your truck’s onboard computer using CARB-approved devices.
Here’s how it works. You schedule a test during your 90-day compliance window—CARB allows you to submit passing tests up to 90 days before your deadline, which gives you time to handle repairs if something comes up. The actual OBD scan takes minutes, not hours. We connect to your truck’s diagnostic port, pull emissions data, and upload results directly to CARB’s system.
If your truck passes, the test is submitted and you’re compliant for the next six months. If it doesn’t pass, you’ll know exactly what needs attention before your deadline hits. Most OBD-equipped trucks pass on the first attempt if they’re maintained regularly, but the 90-day window exists specifically to avoid last-minute scrambles.
You’ll receive documentation showing your truck is compliant, which protects you during roadside inspections and keeps your registration current. Semi-annual testing is required now, but starting October 2027, the frequency increases to four times per year. Getting into a rhythm with testing now makes the transition easier later.
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Every CARB compliant test we perform includes OBD data scanning, submission of passing results to CARB’s database, and documentation proving your truck meets California’s heavy-duty emissions standards. This applies only to trucks model year 2013 or newer with GVWR over 14,000 pounds.
The test itself checks emissions performance through your truck’s onboard diagnostics system. CARB requires this data to verify that emissions controls are working as designed and that your truck isn’t contributing to the nitrogen oxides and particulate matter that heavy-duty vehicles are responsible for. Heavy-duty trucks make up just 3% of California’s vehicle fleet but account for over 50% of diesel pollution—this program targets that imbalance.
French Valley’s location in Riverside County puts your trucks in the middle of California’s logistics backbone. If you’re running freight through the Inland Empire, accessing ports in Long Beach or Los Angeles, or moving goods through regional distribution centers, compliance isn’t negotiable. Non-compliant vehicles can be denied entry to ports and railyards, which shuts down your ability to pick up or deliver loads.
The annual compliance fee is $31.18 per vehicle for 2025, and that’s separate from testing. We handle the testing portion—making sure your trucks pass and your results are submitted correctly so you’re not dealing with registration issues or enforcement actions down the line.
The Clean Truck Check program applies to diesel, hybrid, and alternative fuel trucks with a gross vehicle weight rating over 14,000 pounds that operate on California public roads. If your truck is model year 2013 or newer, it’s subject to OBD emissions testing requirements.
This means semi trucks, heavy-duty pickups used commercially, box trucks, and other commercial vehicles in that weight class all fall under the program. Roughly 1 million heavy-duty trucks and buses operating in California are covered by this regulation. If your truck is older than 2013, different testing requirements may apply, but we specialize exclusively in 2013+ trucks with OBD systems.
The program started enforcement in January 2025, and deadlines are based on your vehicle’s registration renewal date. If you’re operating a fleet in French Valley or anywhere in California, you need to know which trucks are due for testing and when. Missing a deadline triggers registration holds and potential fines, so tracking compliance across multiple vehicles is critical.
Right now, most OBD-equipped trucks need to submit a passing test twice per year—that’s semi-annual testing tied to your compliance deadlines. CARB allows you to submit tests up to 90 days before your deadline, which gives you a buffer to address any issues that come up during testing.
Starting October 1, 2027, the frequency increases to four times per year for OBD-equipped vehicles. That’s a significant change, and it means testing becomes a regular part of your maintenance schedule rather than something you handle twice a year. Getting into a routine now makes that transition smoother.
Each passing test is valid for the compliance period it covers, and results are uploaded directly to CARB’s system by the credentialed tester. You’ll receive documentation, but CARB and DMV also have access to your compliance status, which is how registration holds are triggered for non-compliant vehicles. Staying ahead of deadlines is the easiest way to avoid problems.
If your truck doesn’t pass, the test results will show which emissions-related systems or components aren’t meeting CARB standards. That gives you specific information about what needs repair or attention before you can submit a passing test.
The 90-day testing window exists for exactly this reason. If you test early and your truck fails, you have time to make repairs and retest before your compliance deadline. Waiting until the last minute means a failed test could result in a registration hold or put your truck out of service while you’re scrambling to fix the issue.
Most well-maintained trucks with functioning emissions controls pass on the first attempt. The OBD system is constantly monitoring emissions performance, so if your truck has been running without warning lights or performance issues, it’s likely compliant. But if there’s an underlying problem—faulty sensors, exhaust system issues, or engine performance concerns—the test will catch it. Addressing those issues keeps your truck compliant and often improves fuel efficiency and performance at the same time.
Only tests performed by CARB credentialed testers using CARB-approved testing devices are accepted for Clean Truck Check compliance. That means you can’t just take your truck to any shop—the tester has to hold a current CARB credential, which requires completing the state’s online training course and passing the exam with at least 80%.
Credentials are renewed every two years, so working with a credentialed tester ensures your results are legitimate and will be accepted by CARB and DMV. We employ CARB credentialed testers who specialize in heavy-duty vehicle compliance, so every test meets state requirements and gets submitted correctly.
Some testing providers offer mobile services, which can be convenient if you’re managing a large fleet or your trucks are based at a yard in French Valley or elsewhere in Riverside County. The key is making sure whoever performs the test is properly credentialed and using approved equipment. If the test isn’t done right, it won’t count toward your compliance, and you’ll be back at square one when your deadline hits.
Non-compliance with the Clean Truck Check program can result in registration holds, daily fines up to $10,000 per vehicle, and roadside enforcement actions that pull your truck out of service immediately. These aren’t theoretical penalties—CARB and CHP have authority to enforce compliance at weigh stations, inspection points, and during routine traffic stops.
Registration holds are the most common consequence. If your truck doesn’t have a passing test on file by the deadline, DMV won’t renew your registration. That means the truck can’t legally operate, and you’re losing revenue every day it sits. For fleets running on tight margins, even a few days of downtime per truck adds up fast.
Fines escalate quickly. CARB can issue penalties starting at $1,000 per vehicle per day, and repeat violations or intentional non-compliance can push that to $10,000 per vehicle per day. If you’re running a fleet of 10 trucks and multiple vehicles are non-compliant, the financial exposure is significant. Roadside enforcement adds another layer—if your truck is stopped and found non-compliant, it can be red-tagged and taken out of service on the spot, which creates immediate operational problems.
Even newer trucks with advanced emissions controls need regular testing to verify those systems are working correctly. Diesel particulate filters, selective catalytic reduction systems, and other emissions equipment can degrade or fail over time, and the OBD system monitors performance to catch issues before they become major problems.
Heavy-duty trucks are responsible for over 50% of nitrogen oxides and fine particulate diesel pollution in California, despite making up only 3% of the vehicle fleet. CARB estimates the Clean Truck Check program will prevent 7,500 air quality-related deaths and deliver $75 billion in health benefits over time. That’s why compliance is mandatory and enforcement is strict.
The testing requirement also levels the playing field. Operators who maintain their trucks properly and invest in keeping emissions systems functional shouldn’t have to compete with operators who disable or ignore those systems. Regular testing ensures everyone operating in California meets the same standard, which protects air quality and public health while keeping the freight industry moving. For fleets based in French Valley and the Inland Empire, where truck traffic is constant, compliance is just part of doing business in one of the country’s most important logistics regions.
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