Nationwide Clean Truck Check. CARB Certified.
You're in Control of CARB Compliance with AIRPASS.
Ditch the mobile tech. Skip the test lines. Stay compliant on your schedule with our plug-and-go, CARB-approved solution. Nationwide Clean Truck Check On Board Compliance Device.
Introducing
Stay Legal. Save Time. Stop Fines.
CARB Clean Truck Check doesn’t have to be complicated. AIRPASS™ automatically submits your truck’s test results to CARB so you can focus on driving, not paperwork.
How much is it?
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$300 / year subscription (per truck)
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$99 one-time programming fee (per device)
✔ Each truck requires its own AIRPASS device
✔ Fleet managers can order multiple units for their entire fleet
✔ Fleet discounts available — contact us
Why Drivers & Fleets Choose AIRPASS™
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Avoid Expensive Fines
CARB penalties can cost thousands. AIRPASS keeps you covered automatically. -
Plug & Drive Simplicity
Just install once — AIRPASS keeps reporting while you’re on the road. -
Save Time & Money
No need for repeated manual testing or wasted downtime. -
Trusted by the Pros
Used by independent drivers, fleet managers, and even Tony Stewart Racing Nitro.
How AIRPASS™ Works
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Plug AIRPASS into your truck’s diagnostic port.
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AIRPASS connects securely through AIRLINK.
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Test results (Pass, Not Ready, or Fail) are automatically reported to CARB.
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Log in to your CARB Clean Truck Check (CTC) account to view results, see fault codes, or download your certificate once issued.
What Drivers Are Saying
“I used to stress every CARB test. With AIRPASS, I just plug it in and keep moving. Saved me hours and kept me compliant.” – California Fleet Owner
“It’s like having a certified tester on board. No downtime, no headaches.” – Owner-Operator, Long Haul
Peace of Mind
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Fully CARB-compliant
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Secure data transfer via AIRLINK
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Backed by AIRLIMITS — trusted nationwide
Avoid fines. Stay compliant. Keep rolling.
1
ORDER AIRPASS™
Buy AIRPASS for $300 plus a one time activation fee of $99. Includes 1 year of unlimited testing. No per-test fees—even when testing ramps up to 4x/year. Renews at $300 year.
2
Plug it in.
Install AIRPASS™ in your diagnostic port. Splitter cable included for easy plug-and-drive setup.
3
Drive
That’s it. AIRPASS™ handles the rest—
testing automatically and reporting to CARB when your vehicle is due.
Common Questions About AIRPASS™
Explore answers to frequently asked questions about AIRPASS™ and its compliance features.
Is AIRPASS™ compliant with California’s Clean Truck Check program?
Yes. AIRPASS™ is fully compliant with CARB’s Clean Truck Check (HD I/M) requirements. It performs automatic tests, submits results directly to CARB, and keeps your fleet compliant without the hassle of scheduling.
What vehicles are compatible with AIRPASS™?
AIRPASS™ works with most diesel vehicles 2013 and newer equipped with an OBD port. If you’re unsure, contact our team and we’ll verify your vehicle’s compatibility before you order.
Do I need special tools or technical knowledge to install it?
Not at all. AIRPASS™ is designed for easy, plug-and-drive installation. Just connect it to your vehicle’s diagnostic port with the provided splitter cable and you’re good to go—no mechanic required. You can use included zip ties to tuck it up under the dash, too.
What’s included in the annual subscription?
Your AIRPASS™ subscription includes the device, unlimited testing, real-time compliance monitoring, automatic CARB reporting, and 24/7 U.S.-based support. No hidden fees, ever.
What happens if I need help?
We’ve got your back. Our compliance support team is available 24/7 to assist with setup, diagnostics, or reporting questions. You’re never left on your own with AIRPASS™.
We’re not just a device—we’re your compliance team.
Since 2014, AIRLIMITS has delivered full-scope compliance solutions across North America. From Clean Truck Check and Commercial Harbor Craft, we don’t just help you pass. We keep you moving.
MOBILE COMPLIANCE TESTING
We provide on-site OBD and OVI Opacity Testing for Clean Truck Check and regulatory programs. Our certified mobile techs come to you—no shop delays, no missed deadlines.
COMMERCIAL HARBOR CRAFT
We help vessel operators navigate California’s CHC regulation—from initial registration to emissions reporting. End-to-end management, customized to your fleet and operation type.
Why choose 
Built by Experts. Trusted by Fleets.
“AIRPASS™ streamlined our compliance process, saving us both time and money.”
“The real-time tracking feature is a game-changer for our operations. We can monitor everything on the go.”
“With AIRLINK™, we’ve never been more confident in our compliance. The support team is fantastic!”
“Switching to AIRLINK™ was the best decision for our fleet. The analytics are incredibly insightful.”
“AIRLINK™ has transformed how we manage our fleet. The ease of use is unmatched.”
“TSR Nitro recently added Air Pass to their fleet in order to meet the CARB requirements for the state of California. This is by far the most streamlined, simple system to make sure that you are compliant. Highly recommend for your fleet program.”
Ready to get in the PASS lane? Let's Roll.
Get in the PASS lane with AIRLIMITS—because youv’e got better things to do than play CARB games.
Ready to Transform Your Fleet Management?
Unlock seamless compliance and efficiency with AIRLINK™. Join the leaders in transportation and elevate your fleet operations today.