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:
News - City Safety
City Safety is a new function, sensing if vehicles ahead are moving slower or
standing still. By measuring the car's speed and distance to the vehicle ahead,
City Safety is able to calculate the b ...
Clearing the phone book
In phone mode, all entries in the infotainment
system's phone book can be cleared in Phone
menu
Phone book
Clear phone book.
NOTE
Clearing the entries in the infotainment system's
phon ...
Brake pad inspection
On vehicles equipped with a jack*, the condition of the brake pads can be checked
by raising the vehicle (see page 290 for information about using the jack and removing
a wheel) and performing a v ...
