OBD Clean Truck Check
Official CARB OBD compliance testing for diesel and CNG trucks, model year 2013 and newer, 15,000 lbs and over. Done at your yard, shop, or jobsite — a test takes under 15 minutes.
Mobile · Honest · Dependable · Fast
OBD California Clean Truck Check testing for diesel and CNG trucks 2013 and newer, 15,000 lbs and over. Free diagnostic pre-test included. One free retest if your truck doesn't pass. Fleet and veteran discounts available.
Call or text for a free quote — anytime, anywhere. A test takes under 15 minutes, with results sent straight to CARB.
What We Do
Every test includes a free diagnostic pre-check so you know what to expect. If your truck doesn't pass, you get one free retest — that's our promise.
Official CARB OBD compliance testing for diesel and CNG trucks, model year 2013 and newer, 15,000 lbs and over. Done at your yard, shop, or jobsite — a test takes under 15 minutes.
Before the official test, we run a free pre-check and show you anything being flagged. If the truck isn't ready, CARB never sees a fail and you keep your original compliance deadline.
Always freeIf your truck doesn't pass, we'll tell you exactly what needs fixing. Once it's rectified, we come back one time free on a later date of your choice and run the retest.
1 free retestMultiple trucks at one stop get our fleet discount, and a whole fleet can be knocked out in a single visit. Owner-operators and large fleets alike — same honest service.
Fleet discountsA veteran-owned business that treats every truck like it's our own. Veteran discounts are available — just mention your service when you call or text for your quote.
Veteran discountsRunning trucks around the clock? For yards we service at night, we hold keys to the trucks and gates — the work gets done overnight and your trucks are tested by morning, no one needs to be there.
Call or text (909) 409-1031 for a free quote, or fill out the intake form and we'll get back to you. Open 24 hours, 7 days a week, by appointment — same-day service available.
Your yard, your shop, or your jobsite — anywhere in the Inland Empire and LA County. Free diagnostic pre-test first, then the official OBD test. Under 15 minutes per truck.
Results are uploaded directly to CARB for you, and every tested truck gets a service sticker with its next test date. Payment is easy — Zelle, card, or Venmo.
Three things that make your test go smooth the first time:
Why Drivers Choose Us
1-Stop Networking was built on one principle: treat every truck like it's our own. From single owner-operators to large fleets, we deliver mobile CARB compliance testing with straightforward quotes and zero runaround. We come to your yard, your shop, or roadside — anywhere in the Inland Empire and Los Angeles County.
Most jobs wrap fast — a test takes under 15 minutes — and results upload directly to CARB so you can stay on the road. If your truck doesn't pass on the first try, the retest is on us.
Real tests, real trucks — from shuttle buses to vacuum trucks, if it's 2013 or newer and 15,000 lbs or over, we test it where it sits.
Real Reviews
"Came out same-day and got my Kenworth tested in under an hour. Honest, no surprises. Results uploaded to CARB before I even left the yard."
"We run 12 trucks. 1-Stop knocked out every truck in one visit and gave us a great fleet discount. Easiest CARB testing we've ever scheduled."
"Truck failed the first scan — got the free retest after I cleared the code. No extra charge. That's the kind of service that earns repeat business."
Based in Fontana and fully mobile — there's no shop to drive to. We test at your yard, shop, or jobsite across the Inland Empire and Los Angeles County.
Diesel and CNG trucks model year 2013 and newer with a gross weight of 15,000 lbs and over. If you're not sure your truck qualifies, call or text and we'll help you figure it out.
Under 15 minutes per truck, including the free diagnostic pre-test. Results are uploaded directly to CARB as soon as the test is done.
You get a printout of what's being flagged, CARB does not see a fail on your dashboard, and you keep your original compliance deadline. Once the issues are fixed, you get one free retest.
Every job is quoted individually — truck count, location, and timing all factor in. Call or text (909) 409-1031 for a free quote. Fleet discounts apply on 2 or more trucks, and veteran discounts are available.
Yes. For yards we service at night, we hold keys to the trucks and gates, so testing can be completed overnight and your trucks are ready by morning — nobody needs to be on-site.
We accept Zelle, card, and Venmo. The service fee is paid on arrival, before the test runs.
Call or text for a free quote. We're available 24/7 by appointment, with same-day service across the Inland Empire and LA County.
(909) 409-1031Free pre-test · 1 free retest · Fleet & veteran discounts