Vermont law requires that a vehicle’s entire emissions control system be warranted for a minimum of 3 years or 50,000 miles. Warranty coverage for the more expensive emissions control components is extended to at least 7 years or 70,000 miles, and the engine computer and catalytic converter are covered for 8 years or 80,000 miles. Some vehicles’ emissions control systems are warranted up to 15 years or 150,000 miles! Knowing about your vehicle’s warranty could save you significant money, and can also help protect Vermont’s air quality!
On board diagnostic (OBD) systems were developed in the 1980s by vehicle manufacturers to help technicians diagnose and service the computerized engine management systems of modern vehicles. A new generation of these systems, OBD II, is present on 1996 and newer vehicles.
For more information on Readiness, Warranty, OBDII and Recall information visit avip.vermont.gov
A listing of after-market equipment that is not allowed in the state of Vermont.
Inspection stations in Vermont are privately owned and operated by our business partners. Inspection stations and certified Inspection Mechanics are licensed by DMV to conduct inspections as prescribed in the Vermont Periodic Inspection Manual.
OBD II technology monitors all components of the engine management system and can detect a malfunction or deterioration of these components usually well before the driver becomes aware of any problem. Vehicles equipped with OBD II self-test their emission systems while the vehicle is being driven. Vehicles perform up to 11 system tests, depending on year, make and model of the vehicle. Readiness status identifies whether the vehicle's computer has completed the required tests since the last time the vehicle was serviced with a scan tool or had its battery disconnected.
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