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.

    See also:

    Limitations
    Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see. ...

    Minimum octane
    Typical pump octane label Volvo recommends premium fuel for best performance, but using 87 octane or above will not affect engine reliability. Volvo engines are designed to achieve rated hor ...

    MY CAR
    When the MY CAR symbol has been selected, the following menu alternatives are displayed. • My XC60 • Support systems • Settings ...