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.
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Front park assist
The distance monitored in front of the vehicle
is approximately 2.5 ft (0.8 m). The audible signal
comes from the audio system's front
speakers.
It may not be possible to combine auxiliary
...
Engines
The Volvo XC90 is available with a choice of two high-performance engines -
one diesel and one petrol - both of which produce plenty of power and torque
from low engine speeds and through the mid- ...
Equalizer
Sound levels for different frequencies can be
adjusted separately using this feature.
To do so:
1. Press OK/MENU to access Audio
settings and select Equalizer.
2. Turn TUNE to select one of the ...
