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:
SIRIUS ID
The SIRIUS ID (sometimes referred to as the Electronic Serial Number or ESN)
is required when contacting the Sirius Call Center. It is used to activate your
account and when making any account tra ...
Introduction
Distance Alert is part of Adaptive Cruise Control
and is a function that provides information
about the time interval to the vehicle ahead.
Distance Alert is active at speeds above
approximatel ...
Keylock
When you switch off the ignition, the gear
selector must be in the P (Park) position before
the key can be removed from the ignition
switch. ...
