What is Clean Truck Check?
Clean Truck Check is California's mandatory emissions testing program for heavy-duty diesel vehicles. This program helps ensure trucks operating in California meet the state's strict emissions standards.
Key Requirements
- Annual testing required for all heavy-duty diesel vehicles operating in California
- Applies to trucks with GVWR > 14,000 lbs
- Both OBD (On-Board Diagnostic) testing and visual inspection required
- Results must be submitted to CARB database
Testing Process
- OBD connector check and communication verification
- Full diagnostic scan of emission control systems
- Visual inspection of emission components
- Smoke opacity test (if required)
- Results submission to CARB
Need to Schedule a Test?
We provide mobile testing services throughout Los Angeles, Orange County, and the Inland Empire.