Why Is My Check Engine Light On?

The Check Engine Light strikes fear into the hearts of some and is totally ignored by just as many.  Just what it means is a mystery to most of us.

First, if your check engine light is flashing, that means that something is wrong that could cause severe damage to the catalytic converter or other components.  Get that taken care of right away.  If your check engine light is flashing, you shouldn’t drive at highway speeds, tow or haul heavy loads.  Take it easy all the way to the service center.

If the light is glowing steadily, you should keep an eye on it for a day or two.  If the light doesn’t go off, schedule an appointment with your service advisor to get it checked out.

Some more information on how the Check Engine Light works may be informative.  Most of your engine functions are controlled by a computer, not surprisingly, called an engine control computer.  The computer can adjust many engine parameters for environmental conditions, engine condition and even the way you drive. 


The computer will also try to adjust compensate for some readings.  If it can do so, it’ll then turn off the Check Engine Light.

If the problem can’t be resolved, then the light will remain on and you should get your vehicle looked at.


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Lighthouse Automotive Inc
