Chevrolet 2008 Optra, Owner'S Manual

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Notice: If you keep driving your vehicle with this
light on, after a while, the emission controls
might not work as well, your vehicle’s fuel economy
might not be as good, and the engine might not
run as smoothly. This could lead to costly repairs
that might not be covered by your warranty.
Notice: Modifications made to the engine,
transmission, exhaust, intake, or fuel system of
your vehicle or replacement tires that do not
match your vehicle’s original tires can affect your
vehicle’s emission controls and can cause this light
to come on. Modifications to these systems could
lead to costly repairs not covered by your warranty.
This could also result in a failure to pass a
required Emission Inspection/Maintenance test.
See Accessories and Modifications on page 5-4.
When the ignition is turned to ON/RUN, this light comes
on and should go out after a few seconds as a check
to show it is working. If the light does not come on, have
it repaired. This light also comes on during a malfunction
in one of two ways:
•
Light Flashing — A misfire condition has been
detected. A misfire increases vehicle emissions
and could damage the emission control system on
your vehicle. Diagnosis and service might be
required.
•
Light On Steady — An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service might be required.
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