How do states use OBD II for emission inspections?

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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Replacing the low beam bulb (halogenheadlights)
1. Remove the plastic cover over the bulb by
turning it counterclockwise.
2. Pull the connector from the lamp housing.
3. Loosen the bulb's retaining spring by first
moving it to the right and t ...
Two wood inlays
Two different wood inlays are available: Classic Wood and Nordic Light Oak.
The standard base theme is called Charcoal, and another inlay theme is called
Brushed Aluminium.
Power tailgate
The o ...
Interior rearview mirror
Auto-dim function
An integrated sensor reacts to headlights from
following traffic and automatically reduces
glare in the mirror. ...
