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:
Sensor location
• The sunlight sensor is located on the top
side of the dashboard.
NOTE
The sunlight sensor monitors which side of
the car that is most exposed to sunlight.
This can mean that the temperature m ...
Volvo and the environment
Volvo is committed to the well being of its customers.
As a natural part of this commitment,
we care about the environment in which we all
live. Caring for the environment means an
everyday inv ...
Condensation on the inside of thewindows
Keeping the insides of the windows clean will
help reduce the amount of condensation that
forms on the windows. Use a commercial window
cleaning agent to clean the windows. ...
