Driver Driven. CARB Certified. 24/7 Support
Welcome to the PASS Lane
AIRLIMITS™ leads the nation in Clean Truck Check solutions.From plug-n-drive AIRPASS™ devices to on-site mobile techs, we’ve got you covered—anywhere you roll. Fast. Reliable. Driver-first.
Because you’ve got better things to do than play CARB games.
Introducing
Plug. Drive. Comply. $300 per year
AIRPASS™ is the plug-and-drive solution for Clean Truck Check compliance—no appointment required.
No shop visits, no scheduling.
Your truck gets tested automatically when it’s ready. Nothing is sent to CARB until it’s time to test — and your data stays private until then.
Need a retest after repairs? It handles that too.
For $300 per year & a one time $99 activation fee, you get the AIRPASS™ device plus your first year of compliance service, including:
- Unlimited testing — no shop visits, no retst fees
- Automatic reporting — when your truck is ready
- Lifetime warranty — we’ve got your back
- Self-installation in 10 minutes — OBD-II, 9-pin, splitter cable.
- CARB-certified and driver-approved
- Works in the U.S., Canada & Mexico
You own the device. Transfer it to your next truck, or sell it with the vehicle — AIRPASS™ is yours.
The device can also perform on-demand Clean Truck Check tests when you receive an NST or need to retest after a failed inspection.
An NST (Notice to Submit to Testing) is triggered by roadside sensors that detect potential high emissions. If you receive an NST, you must complete a Clean Truck Check test within 30 days to avoid a $5,000 fine.
1
Buy 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’s ready.
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. CARB Recommended.
“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.”
“AIRLIMITS is your best bet.”
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.