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:
Top tether anchors
Top tether anchorage points
Your vehicle is equipped with child restraint top
tether anchorages in all second row seat positions
(second-row seats only in 7-seat models).
Using the top tether an ...
Handling, roadholding
Vehicle load, tire design and inflation pressure all affect vehicle handling.
Therefore, check that the tires are inflated to the recommended pressure according
to the vehicle load. See the " ...
Automatic transmission
Shiftgate positions
Depress the button on the front of the gear selector knob to move the gear selector
between the R, N, D, and P positions.
The gear selector can be moved freely between the Ge ...
