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Semi truck driving along a California highway, representing mobile and on-site CARB emissions compliance testing for heavy-duty diesel vehicles

Mobile & Onsite CARB Compliance Testing

Clean Truck Check Made Simple

Testing for Alternative Fuel & 2012 or older Diesel Engines

Competitive Fleet Pricing

15+ Years of Expertise

Trusted Industry Leaders Since 2008

Visit Our Dedicated CARB Compliance Website

Need to Schedule a CARB Test or Have Questions?

Our team is here to help with compliance questions, service availability, and appointment scheduling.
Contact someone at one of our 3 expert locations to speak with a CARB specialist today.

Benefits of Our CARB Services

Industry Leaders

01

With 15+ years of experience in CARB compliance, CDS, SoCal ensures accurate and efficient testing backed by deep regulatory expertise.

One Stop Compliance

02

We provide complete compliance solutions by testing, repairing, and certifying your trucks in a single visit.

Mobile & On-Site Service

03

Our mobile units come to you, minimizing downtime and keeping your fleet running smoothly.

California State Service

04

Serving all of California, we provide fast, reliable emissions testing wherever your fleet operates.

Trusted by Fleets

05

Major fleet operators rely on our proven track record to maintain seamless emissions compliance.

Achieving CARB Compliance

STEP-BY-STEP GUIDE

The Clean Truck Check, officially known as the Heavy-Duty Inspection and Maintenance (HD I/M) Regulation, is a program established by the California Air Resources Board (CARB) to ensure that heavy-duty vehicles maintain properly functioning emissions control systems throughout their operational life. This regulation applies to nearly all diesel and alternative fuel heavy-duty vehicles operating on California's public roads and highways, regardless of their registration state.

01

Register Your Truck(s)
with CARB Online

Register Online at:

CleanTruckCheck.ARB.CA.Gov

  • Log in & update your truck’s status

  • Upload emissions compliance documents if required

​

Need Help? Contact Us:

(714) 276-2020

02

Get Tested &
Fix Any Issues

We perform a
Clean Truck Check with:

  • On-board diagnostics (OBD) for newer trucks

  • Opacity Smoke Test (J1667) for 2010 & older trucks
     

If your truck fails, we diagnose and repair the issues—no extra hassle.

03

Submit Your Compliance Certificate

  • Submit results via their portal for official certification

  • Fleet operators may need to update records

  • Keep a copy of your compliance certificate for inspections

 

🚨
Failure to submit compliance can result in fines or registration holds

CARB Compliance Services

TESTING, REPAIR, AND CERTIFICATION

1

Emissions Testing for
2012 & Older Diesel Engines

  • Smoke Opacity Testing:
    Measures particulate emissions (PM).​

  • Visual Inspection:
    Ensures emissions control components are present and functional.​

  • Mobile & Onsite Testing:
    We test at your location or one of our facilities.​

  • Repairs & Recalibrations:
    Address compliance failures to ensure your vehicle meets CARB standards.

2

Emissions Testing for
2013 & Newer Diesel Engines

  • OBD System Scan:
    Reads emissions data to detect compliance issues.​

  • Smoke Opacity Testing (If required):
    Ensures exhaust emissions remain within CARB’s limits.​

  • Mobile & Onsite Testing:
    We test at your location or one of our facilities.​

  • Repairs & Recalibrations:
    Fix compliance failures to ensure certification.​

3

Emissions Testing for
Fleet Operators

  • Scheduled Testing & Tracking:
    We manage testing schedules and track compliance for your entire fleet.​

  • Regulatory Support & Consulting:
    Provide guidance on CARB regulations and compliance strategies.​

  • Mobile & Onsite Testing:
    We test at your location or one of our facilities.​

  • Repairs & Recalibrations:
    Address compliance failures across your fleet to maintain operational efficiency.

visit our dedicated CARB compliance website

MORE INFO & SCHEDULE TESTING

Need to Schedule a CARB Test or Have Questions?

Our team is here to help with compliance questions, service availability, and appointment scheduling.
Contact someone at one of our 3 expert locations to speak with a CARB specialist today.

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