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before any problem is apparent, which may prevent
more serious damage to your vehicle. This system is
also designed to assist your service technician in
correctly diagnosing any malfunction.
The SERVICE ENGINE SOON light should come on,
as a check to show you it is working, when the ignition
is on and the engine is not running. This light will also
come on during a malfunction in one of two ways:
Light on steady - indicates a system malfunction has
been detected. Drive the vehicle to the dealer for
service at your first opportunity.
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Light flashing
-
indicates a misfire has been detected
which may damage the emission control system. The
damage may be reduced by lowering the vehicle
speed, reducing the amount of cargo being hauled or
trailered, avoiding hard acceleration, or by avoiding
steep uphill grades. If these actions are effective, the
light will stop flashing and remain on steady. Drive
the vehicle to a dealer for service. If the light
continues to flash, stop the vehicle. Wait for a steady
light to come on, then drive the vehicle to a dealer
for service.
These following conditions also may cause the
SERVICE ENGINE SOON light to come on:
Low Fuel/Out of Fuel
-
As the vehicle starts to run out
of fuel the SERVICE ENGINE SOON light may come
on as a result of an engine misfire. Filling your gasoline
tank should correct this condition. Make sure to install
the gas cap fully. It will require a few driving trips to
turn the light off.
Poor Quality Fuel
-
Be sure to fuel your vehicle with
quality fuel. Your engine may not run efficiently on poor
fuel.
Poor
fuel may cause stalling, hesitation or misfire.
These conditions may go away when the engine is
warmed-up. However, poor quality fuel may cause the
SERVICE ENGINE SOON light to come on.
Have a dealer check the vehicle. If no problems are
found, you may want to change to another brand of fuel.
Driving Through Standing Water - Driving your vehicle
through puddles of deep standing water may result in a
temporary misfire condition. This condition will usually
correct itself shortly after the electrical system dries out.
It will require a few driving trips to turn the light off.
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