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You’re dealing with enough already. Managing a fleet or running an owner-operator business in West Puente Valley means juggling routes, maintenance, fuel costs, and now California’s Clean Truck Check requirements on top of everything else.
Here’s what matters: if your trucks are model year 2013 or newer with a GVWR over 14,000 pounds, you need semi-annual CARB emissions testing. Miss it, and the DMV puts a registration hold on your vehicle. You can’t renew. You can’t operate legally. And the fines start stacking up fast—up to $10,000 per vehicle per day.
We handle the testing part so you can focus on the driving part. Our mobile service means we come to you in West Puente Valley, test your trucks on-site, and get you back on the road without the hassle of driving to a testing station. You stay compliant, your registration stays current, and your trucks keep earning.
All SMOG Motors specializes exclusively in Clean Truck Check compliance for heavy-duty diesel vehicles. We’re not a general smog shop trying to figure out commercial trucks on the side. This is what we do.
We’re CARB certified and state licensed to perform OBD emissions testing on 2013 and newer heavy-duty trucks. Our equipment is CARB approved, our testers are properly credentialed, and we understand the regulations that apply specifically to commercial operators in West Puente Valley and throughout California.
West Puente Valley sits in the heart of California’s logistics corridor, with over 1,000 residents employed in transportation and warehousing. You’re running trucks through some of the most regulated territory in the country, and you need someone who knows exactly what CARB requires and how to get you through it without wasting your time.
First, you schedule a time that works for your operation. We bring our mobile testing unit directly to your location in West Puente Valley—your yard, your facility, wherever your trucks are parked.
When we arrive, we connect our CARB certified OBD testing device to your truck’s diagnostic port. For 2013 and newer heavy-duty diesel trucks, this is a relatively quick process. The device reads your truck’s onboard diagnostics to verify emissions system performance and compliance with CARB standards.
If your truck passes, we submit the results directly to the CTC-VIS database that same day. CARB and the DMV can see you’re compliant, which protects your registration and keeps you legal to operate. If there’s an issue, we’ll tell you exactly what needs attention before you can pass. No runaround, no guessing.
You’ll need this done every six months right now. By 2027, CARB is increasing the frequency to four times per year for OBD-equipped vehicles. We’ll help you track those deadlines so you’re never caught off guard.
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You get CARB certified OBD emissions testing performed by a credentialed tester using state-approved equipment. That’s the baseline. But what you’re really getting is protection from the consequences of non-compliance.
California has roughly one million heavy-duty trucks and buses operating statewide. Heavy-duty vehicles make up only 3% of vehicles on the road but produce over 50% of nitrogen oxides and fine particle diesel pollution. That’s why CARB enforcement is aggressive. In 2022 alone, CARB collected $21.5 million in penalties from commercial vehicle operators.
In West Puente Valley, where the transportation and warehousing sector employs a significant portion of the local workforce, staying compliant isn’t optional. You need access to California ports and railyards. You need your DMV registration to stay current. And you need to avoid fines that can reach $37,500 per violation.
Our mobile service eliminates the need to pull trucks out of service and drive them to a testing facility. We come to you, test on-site, and submit results the same day. You minimize downtime, stay on schedule, and keep your operation moving without the compliance headaches.
If your truck is model year 2013 or newer and has a GVWR over 14,000 pounds, Clean Truck Check testing is mandatory under California law. This isn’t optional and it’s not something you can skip.
CARB enforcement started January 1, 2023, and as of August 2024, the DMV began placing registration holds on non-compliant vehicles. That means if you don’t complete your required testing, you won’t be able to renew your registration. Your truck becomes illegal to operate on California roads.
The testing requirement applies to diesel trucks, public vehicles, motorcoaches, transit buses, hybrids, and other commercial vehicles over 14,000 pounds GVWR. Right now, you need testing every six months. By 2027, that increases to four times per year for OBD-equipped vehicles. This is a permanent compliance requirement, not a temporary program.
If your truck fails, you’ll need to get the emissions system repaired and then retest. We’ll tell you exactly what the diagnostic readout shows so you know what needs fixing.
Common failure reasons include malfunctioning emissions components, deleted or tampered emissions systems, or diagnostic trouble codes that indicate the emissions controls aren’t working properly. You can’t pass with a check engine light on or with emissions-related fault codes stored in the system.
Once you’ve made the necessary repairs, we can come back and retest. You need a passing result submitted to the CTC-VIS database to clear your compliance requirement. Until you pass, your registration hold stays in place and you’re at risk for penalties if you continue operating the vehicle. The faster you address the issue and retest, the faster you’re back to full compliance.
Testing costs in the West Puente Valley area typically range from $50 to $190+ per truck, depending on whether you’re using mobile service or going to a fixed testing location. Mobile services generally charge more because of the convenience factor, but you save on downtime and the cost of pulling trucks out of service.
At All SMOG Motors, our pricing is competitive with the local market. We’re not the cheapest option, and that’s intentional. You’re paying for CARB certified equipment, properly credentialed testers, and mobile service that comes to your location instead of making you come to us.
You’ll also need to pay CARB’s annual compliance fee, which is $32.13 as of 2026. That’s separate from the testing fee and goes directly to CARB. Factor in both the testing cost and the compliance fee when budgeting for your Clean Truck Check requirements. Missing a test and facing penalties costs far more than staying compliant from the start.
Clean Truck Check testing through OBD diagnostics only applies to heavy-duty trucks that are model year 2013 or newer. If your truck is older than 2013, it’s subject to different CARB regulations but not the Clean Truck Check program we’re discussing here.
This is a critical distinction. All SMOG Motors specializes in Clean Truck Check testing for 2013+ trucks with GVWR over 14,000 pounds. We don’t handle older model testing because those vehicles fall under different inspection programs with different equipment and certification requirements.
If you’re running a mixed fleet with both pre-2013 and post-2013 trucks, you’ll need different testing providers for different vehicles. Make sure you’re clear on which trucks need Clean Truck Check and which need other types of emissions compliance. Operating under the wrong assumption can leave you non-compliant even if you think you’re doing everything right.
Right now, you need Clean Truck Check testing every six months for trucks model year 2013 or newer with GVWR over 14,000 pounds. That’s twice per year, and you need to stay on top of those deadlines to avoid registration holds.
Starting in 2027, CARB is increasing the testing frequency to four times per year for OBD-equipped vehicles. That means you’ll need testing every three months instead of every six. The frequency increase is part of CARB’s ongoing effort to tighten emissions compliance for heavy-duty vehicles.
Missing a deadline isn’t something you can brush off. The DMV will place a registration hold on your vehicle, and you’ll face penalties if you continue operating without current compliance. We recommend setting calendar reminders well before your due dates and scheduling your mobile testing in advance so you’re never scrambling at the last minute.
We provide mobile Clean Truck Check testing throughout West Puente Valley. That means we bring our CARB certified testing equipment directly to your location—your yard, your facility, wherever your trucks are parked.
Mobile testing eliminates the downtime and logistical hassle of driving your trucks to a fixed testing station. For fleet operators and owner-operators running tight schedules, that’s a significant advantage. You don’t lose hours of productive time, and you don’t have to coordinate transportation to and from a testing facility.
We schedule appointments that work around your operation. You tell us when and where, and we show up with everything needed to test your trucks on-site and submit results to the CTC-VIS database the same day. It’s the most efficient way to stay compliant without disrupting your business.
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