ANSWERS THAT KEEP YOUR TRUCK MOVING.
Guides to DPF cleaning, diagnostics, and Clean Truck Check for California owners and operators. Start with the issue you face today.
DPF cleaning
DPF cleaning without removal: what to expect
Learn how hydrogen-assisted DPF cleaning is arranged, how long it usually takes, and why the cause of a restriction matters.
Read guideRestricted DPF? Warning signs and first steps
Power loss, frequent regeneration, and emissions warnings may point to a DPF issue or another fault. Learn what to check first.
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Clean Truck Check
California Clean Truck Check: essentials for your truck
What Clean Truck Check is, where to find your deadline in CTC-VIS, and why the test type depends on the vehicle. CARB-sourced guide.
Read guideOBD or opacity: which test does my truck need?
Understand the difference between OBD and opacity testing for Clean Truck Check and how to verify the right procedure for your diesel engine.
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STILL HAVE A QUESTION?
Tell us what is happening with your truck and we will help you choose the next step.