Connect to the truck
A credentialed tester connects an approved OBD testing device to the vehicle diagnostic connector.
Transparent Services & Pricing
Clear rates for owner-operators and small fleets. All services are by confirmed appointment.
Clean Truck Check OBD Testing
For eligible trucks with 2013-and-newer engines. Tests performed by a CARB-credentialed tester. Different procedures may apply to older vehicles.
$150 / 1 truck
$140 / truck for 2–4 trucks at one stop
$125 / truck for 5+ trucks at one stop
Request testing →Monthly Compliance Paperwork Plan
$100 / month
Per truck, billed $300 every 3 months.
Included: IFTA reporting; UCR annual filing assistance; MCS-150 updates; permit processing and renewals; permit expiration reminders; filing deadline reminders; and paperwork questions and assistance.
Not included: Form 2290 preparation and government filing fees or taxes.
Request an Appointment →Mobile Testing & Travel
Free travel within 5 miles of our Fairfax office.
Beyond 5 miles, travel fees start at $15 per visit. One travel fee per visit, regardless of the number of trucks. Confirmed quote provided before service.
Mobile jump-start assistance is planned to launch the week of November 2, 2026. Ask to be contacted when service begins. Availability, supported vehicles, pricing, and dispatch are subject to equipment and insurance readiness.
Request Mobile Service →Mobile Jump-Start Assistance
PLANNED LAUNCH · WEEK OF NOVEMBER 2
Roadside battery jump-start assistance for eligible semi-trucks and passenger cars in Northern Virginia is planned for next week.
Service is not yet active. Equipment, vehicle compatibility, insurance coverage, dispatch area and pricing will be confirmed before launch.
Ask about launch availability →Government fees and taxes are extra. Testing, paperwork consultations, and mobile visits are by appointment only. A routine OBD test does not replace a state-directed referee inspection.
UNDERSTANDING THE TEST
How California Clean Truck Check OBD Testing Works
Learn about the typical on-board diagnostic testing process. Your exact inspection depends on your truck, eligibility, and CARB requirements.
Read emissions data
Approved software collects the required OBD snapshot and diagnostic information.
Submit test data
The approved system transmits the test data for CARB processing. An upload does not guarantee a passing result.
Review test results
Vehicle owners can review their test outcome through their CTC-VIS account.
OFFICIAL EDUCATIONAL VIDEO
See how OBD testing is performed
Watch CARB TruckStop's official training module on on-board diagnostic testing. This independent educational video is not footage of Clean Truck Test LLC performing a customer inspection.
Watch on YouTube ↗Video credit: California Air Resources Board (CARB TruckStop). Not an endorsement of our business.
Request an Appointment
Complete this form to send your request directly to Clean Truck Test LLC. This is a request only; our staff must confirm your appointment. Jump-start inquiries are for launch updates only—no emergency dispatch is currently available.
FIND OUR OFFICE
Visit Us in Fairfax
Arriving with a commercial truck? Please contact us before traveling so we can confirm your appointment, parking location, vehicle access, and arrival instructions.
Our address
11200 Waples Mill Rd, Suite 360
Fairfax, VA 22030
Business hours
Open every day, 9:00 AM–6:00 PM
Last standard appointment start: 5:00 PM
Call or text
Email
Truck parking and arrival
Truck parking is available by arrangement. Confirm parking space, trailer access, and where to meet us before arrival. No walk-ins; confirmed appointments only.
Before your first visit
Please call for the exact truck entrance and parking directions. Real office and parking photographs will be added after they are available.