Heated oxygen sensors

The heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fed into a control module that continuously monitors engine functions and controls fuel injection. The ratio of fuel to air into the engine is continuously adjusted for efficient combustion to help reduce harmful emissions.
See also:
Emission inspection readiness
What is an Onboard Diagnostic System (OBD II)?
OBD II is part of your vehicle's computerized engine management system. It stores
diagnostic information about your vehicle's emission control ...
Overview
Center console control panel
1 VOL: Volume control
2 MEDIA button
3 TUNE: Turn to navigate among menu alternatives
and folders shown in the display.
4 OK/MENU: Press to confirm your selection ...
Snow chains
Snow chains can be used on your Volvo with
the following restrictions:
• Snow chains should be installed on front
wheels only. Use only Volvo approved
snow chains.
• If accessory, aftermarket o ...
