ONBOARD DIAGNOSTIC
SYSTEM (OBD II)
To meet new government regulations and pro-
mote cleaner air, your vehicle is equipped with a
sophisticated onboard diagnostic system called
OBD II. This system monitors the performance
of the emissions and engine control systems.
When these systems are operating properly,
your vehicle will provide excellent performance
and fuel economy, as well as engine emissions
well within current government regulations.
If any of these systems require service, the OBD
II system will turn on the Malfunction Indicator
Light. It will also store diagnostic codes and
other information to assist your service techni-
cian in making repairs.Although your vehicle will
usually be drivable and not need towing, see
your authorized dealer for service as soon as
possible.
CAUTION!
Prolonged driving with the light on could
cause further damage to the emission control
system. It could also affect fuel economy and
driveability. The vehicle must be serviced
before any state emissions tests can be
performed.
If the light is flashing, severe catalytic converter
damage and power loss will soon occur. Imme-
diate service is required.
Onboard Diagnostic System (OBD II)
Cybersecurity
Your vehicle is required to have an Onboard
Diagnostic system (OBD II) and a connection
port to allow access to information related to the
performance of your emissions controls. Autho-
rized service technicians may need to access
this information to assist with the diagnosis and
service of your vehicle and emissions system.
WARNING!
• ONLY an authorized service technician
should connect equipment to the OBD II
connection port in order to diagnose or
service your vehicle.
• If unauthorized equipment is connected to
the OBD II connection port, such as a
driver-behavior tracking device, it may:
• Be possible that vehicle systems, includ-
ing safety related systems, could be
impaired or a loss of vehicle control
could occur that may result in an acci-
dent involving serious injury or death.
• Access, or allow others to access, infor-
mation stored in your vehicle systems,
including personal information.
For further information, refer to “Privacy Prac-
tices — If Equipped With Uconnect 8.4 Radio”
and “Uconnect CyberSecurity” in “All About
Uconnect Access” in your Owner’s Manual Ra-
dio Supplement and “Cybersecurity” in “Under-
standing Your Instrument Panel”.
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement
to pass an inspection of your vehicle’s emis-
sions control system. Failure to pass could
prevent vehicle registration.
Normally, the OBD II system will be
ready. The OBD II system may not be
ready if your vehicle was recently ser-
viced, or recently had a dead battery
or a battery replacement. If the OBD II system
should be determined not ready for the I/M test,
your vehicle may fail the test.
Your vehicle has a simple ignition actuated test,
which you can use prior to going to the test
station. To check if your vehicle’s OBD II system
is ready, you must do the following:
1. Cycle the ignition to the ON mode, but do not
crank or start the engine.
NOTE:
If you crank or start the engine, you will have
to start this test over.
2. As soon as you cycle the ignition to the ON
mode, you will see the “Malfunction Indicator
Light (MIL)” symbol come on as part of a
normal bulb check.
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