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 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.
See also:
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 ...
