Mobile testing · We come to you
Clean Truck Check testing, at your yard.
A CARB-credentialed tester comes to your yard, terminal or job site, runs the test and submits the result to CARB. No shop visit, no waiting in line.
OBD test · 2013 and newer
Smoke opacity (OVI) · 2012 and older
Fleet rates available. CARB’s annual fee is paid separately to CARB.
How it works
Three steps, no shop visit
Book your test
Fill in the form below with your truck and a preferred day. Not sure where the truck will be? City and state is fine.
We come to you
Your tester confirms the exact spot and time, then tests the truck where it’s parked.
Results go to CARB
We submit the result to CARB. Your certificate shows up in your CTC-VIS account.
Long Beach and Los Angeles County
OBD and smoke opacity
Orange County
OBD and smoke opacity
Ontario and the Inland Empire
OBD and smoke opacity
San Diego
Book at least 24 hours ahead
Salt Lake City, UT
OBD testing
Phoenix, AZ
OBD testing
Philadelphia, PA
OBD testing
Nashville, TN
OBD testing
Book a test
Book your appointment
Tell us when the truck is due so we can schedule it in time. We’ll confirm your appointment by phone or text.
Rather book by phone? Call or text 1-800-788-5241, any time.
Skip the next appointment
Let the truck test itself
For 2013 and newer trucks, AIRPASS™ runs every test automatically for $25 a month, even when testing goes to four times a year in October 2027.
FAQ
Mobile testing questions
Which test does my truck need?
2013 and newer diesel engines get an OBD test ($175). 2012 and older get a smoke opacity test with a visual inspection ($325). Check the engine label: the engine year is often a year older than the truck.
What if I don’t know where the truck will be?
Book with the city and state. Your tester will reach out to confirm the exact location before the visit.
Do you test fleets?
Yes. We can test several trucks in one visit at your yard or terminal. Call or text 1-800-788-5241 for fleet rates.
How soon can you come out?
It depends on the area and the day. Request your preferred dates in the form, and tell us when the truck is due so we can schedule it before the deadline.