Malfunction Indicator Lamp - Chevrolet 2003 Venture Owner's Manual

Malfunction Indicator Lamp
Service Engine Soon Light in the
United States or Check Engine Light in
Canada
1
SERVICE
ENGINE
SOON
United States Canada
Your vehicle is equipped with a computer which
monitors operation of the fuel, ignition and emission
control systems.
This system is called OBD II (On-Board Diagnostics
emissions are at acceptable levels for the life of
the vehicle, helping to produce a cleaner environment.
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The SERVICE ENGINE SOON or CHECK ENGINE light
comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem is apparent. This
may prevent more serious damage to your vehicle. This
system is also designed to assist your service
technician in correctly diagnosing any malfunction.
Notice: If you keep driving your vehicle with this
light on, after a while, your emission controls
may not work as well, your fuel economy may not
be as good and your engine may not run as
smoothly. This could lead to costly repairs that may
not be covered by your warranty.
Notice: Modifications made to the engine,
transaxle, exhaust, intake or fuel system of your
vehicle or the replacement of the original tires with
other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle's emission
controls and may cause this light to come on.
Modifications to these systems could lead to costly
also result in a failure to pass a required Emission
lnspection/Maintenance test.
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