Tests for Vehicles 1996 and Newer
Newer vehicles are tested using technology that uses the vehicle's OBD (on-board diagnostics) computer system to diagnose operations of emissions control systems. The new test will help ensure that today's newer, low emissions vehicles with their advanced computerized emissions controls continue to run clean and efficiently.
The OBD test is quick and easy. The inspector connects your on-board computer, which continuously monitors the engine and emissions controls, to the inspection computer and downloads the data. The results are printed on the Vehicle Inspection Report (VIR) that you receive at the end of the test.
If you pass the OBD test, you pass the emissions test. Some 1996 model year and newer vehicles do not respond to emissions testing using OBD. These vehicles will receive a tailpipe test.
How Does My Vehicle's OBD System Work?
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