Mobile CARB Clean Truck Check – We Come to You.

What Is the Clean Truck Check?

Understanding CARB’s Clean Truck Check (HD I/M)

  • California Air Resources Board (CARB) requires most diesel and alternative-fuel heavy-duty trucks (>14,000 lbs) to undergo regular emissions checks.

  • Tests include OBD plug-in checks (for newer trucks) and SAE J1667 smoke opacity tests (for older diesel engines).

  • Reports are submitted to CARB’s official CTC-VIS portal for compliance.

Stay compliant with California’s Clean Truck Check (HD I/M) program. On-site OBD and J1667 smoke opacity tests for fleets, motorhomes, and heavy-duty trucks.

Why Choose NorCal CARB Mobile

Mobile Testing That Saves You Time & Money

  • ✔ On-site testing at yards, jobsites, and truck stops

  • ✔ CARB-certified equipment & technicians

  • ✔ Nights & weekends available

  • ✔ Results uploaded directly to CARB (CTC-VIS)

  • ✔ Veteran-managed, Northern California based

Service Areas Covered

Clean Truck Check Near Me – Northern California Service Areas
We proudly serve:

  • Stockton • Oakland • Sacramento • Modesto • Fairfield • Antioch • Tracy • Bay Area • San Joaquin Valley