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:
Fuel filler door
Press the button on the light switch panel (see
the illustration on page 67) when the vehicle
is at a standstill to unlock the fuel filler door.
Please note that the fuel filler door will remain
...
Active Yaw Control (AYC)
This function helps maintain directional stability,
for example when cornering, by braking
one or more of the wheels if the vehicle shows
a tendency to skid or slide laterally.
This is one of D ...
Adjusting the set speed
After a speed has been set, it can be increased
or decreased by using the or
buttons.
1. Press and hold down or
until the
vehicle reaches the desired speed.
> This will become the set ...
