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:
Vehicle loading
Properly loading your vehicle will provide maximum
return of vehicle design performance.
Before loading your vehicle, familiarize yourself
with the following terms for determining your
vehicle's ...
Power tailgate
Power tailgate closing button ...
Listening to satellite radio
The Sirius satellite system consists of a number
of high elevation satellites in geosynchronous
orbit.
NOTE
• The digital signals from the Sirius satellites
are line-of-sight, which means that
p ...
