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:
Child safety locks
Child safety locks in the rear doors
Manual child safety locks – rear doors/
tailgate
The controls are located on the rear door jambs
and at the lower edge of the tailgate. Use a key
or small s ...
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 ...
Safety
All-disc antilock brakes, traction control, side-impact and side curtain-type
airbags, and Volvo's Whiplash Protection Seating System are standard. Dynamic
Stability and Traction Control is option ...
