How do states use OBD II for emission inspections?

How do states use OBD II for emission inspections?  - Emission inspection readiness - Maintaining your car - Maintenance and specifications - Volvo XC60 Owners Manual - Volvo XC60

Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test.

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    About this manual
    • Before you operate your vehicle for the first time, please familiarize yourself with the information found in the chapters "Your Driving Environment" and "During Your Trip.&qu ...

    How can I prepare for my next OBD II emission inspection?
    • If your Check Engine (MIL) light is lit – or was lit but went out without service, have your vehicle diagnosed and, if necessary, serviced by a qualified Volvo technician. • If you recently h ...

    Introduction
    Volvo recommends the use of Volvo trailer hitches that are specially designed for the vehicle. NOTE See page 337 for the maximum trailer and tongue weights recommended by Volvo. Observe t ...