What is an Onboard Diagnostic System (OBD II)?

What is an Onboard Diagnostic System (OBD II)?  - Emission inspection readiness - Maintaining your car - Maintenance and specifications - Volvo XC60 Owners Manual - Volvo XC60

OBD II is part of your vehicle's computerized engine management system. It stores diagnostic information about your vehicle's emission controls. It can light the Check Engine light (MIL) if it detects an emission control "fault." A "fault" is a component or system that is not performing within an expected range. A fault may be permanent or temporary. OBD II will store a message about any fault.

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    Incoming calls
    Press OK/MENU (or the thumb wheel on the steering wheel keypad) to answer a call, even if the infotainment system is currently in another mode (e.g., RADIO or MEDIA). Press EXIT to reject a c ...

    Low battery voltage
    If the battery voltage is too low, the parking brake cannot be applied or released. Connect an auxiliary battery if the battery voltage is too low, see page 114. ...

    Temporary spare
    The spare tire in your vehicle1 is called a "Temporary Spare". Recommended tire pressure (see the placard on the B-pillar or on the fuel filler door) should be maintained irrespective ...