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.
See also:
Audible/visual alarm signal
• An audible alarm signal is given by a battery
powered siren. The alarm cycle lasts
for 30 seconds.
• The visual alarm signal is given by flashing
all turn signals for approximately 5 minutes ...
Searching for and storing songs
The Song Seek function provides notification
when Sirius is broadcasting the songs selected
in song memory. Song memory enables you
to store the name of the song for future
advance notificatio ...
Fuel Formulations
Do not use gasoline that contains lead as a knock inhibitor, and do not use lead
additives. Besides damaging the exhaust emission control systems on your vehicle,
lead has been strongly linked to ...
