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:
Use of Additives
With the exception of gas line antifreeze during
winter months, do not add solvents, thickeners,
or other store-bought additives to your
vehicle's fuel, cooling, or lubricating systems.
Overuse ...
Opening the trunk manually
The trunk is held closed by an electronic locking mechanism. To open:
1. Press lightly on the rubberized plate under the handle to release the lock.
2. Lift the handle to open the trunk lid.
CA ...
Maintenance services
Your Volvo passed several major inspections
before it was delivered to you, in accordance
with Volvo specifications. The maintenance
services outlined in the Warranty and Service
Records Informati ...
