Service Engine Soon - Pontiac 1996 Grand Prix Owner's Manual

Malfunction Indicator Lamp
(Service Engine Soon Light)
SERVICE
ENGINE SOON
Your Pontiac is equipped
with
a
computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD I1 (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.
(In
Canada, OBD 1 1 is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE SOON
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, which
may prevent more serious
damage
to your vehicle. This
system is also designed to assist your s~ewice technician
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.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, Gave it repaired.
This light will also come on during a malfunction in one
of two ways:
fight Flashing
--
A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the epission control system on your
vehicle. Dealer or qualified service center diagnosis
and service
is
required.
Light On Steady
--
An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.
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