Service Engine Soon
Using your car's on board diagnostic system


When that light goes on, you get anxious and angry. Your car certainly knows why it turned on that annoying "service engine soon" light. Now you can find out for yourself using a simple scan code reader to retrieve the diagnostic test codes from your car's on-board diagnostic system. These can be decoded, interpreted, and used to guide the diagnosis and repair of your car. You are no longer at the mercy of the dealer each time that annoying little Malfunction Indicator Lamp goes on.

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The information in these Web pages is designed to provide accurate information regarding operation of OBD II systems. It is made available free of charge with the understanding that neither the author nor the service provider is engaged in rendering legal, automobile repair, or other professional service. If automobile repair, legal advice or other expert assistance is required, the services of a competent professional person should be sought. Your continued use of these web pages acknowledges your acceptance of these terms.