Notice – Oldsmobile 1999 Alero User Manual

Page 122

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2-62

Malfunction Indicator Lamp
(Service Engine Soon Light in the United
States or Check Engine Light in Canada)

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

-

Second Generation) and is intended to assure

that emissions are at acceptable levels for the life of the
vehicle, helping to produce a cleaner environment. 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 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 the SERVICE ENGINE SOON or
the CHECK ENGINE light to come on.
Modifications to these systems could lead to
costly repairs not covered by your warranty. This
may also result in a failure to pass a required
Emission Inspection/Maintenance test.

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