To reset a check engine light you have two options. You can use an OBD II scanner(They can do this for you at most places like autozone, oriellys, napa for free. You just go in and ask them). The other option is to disconnect the battery for 1 minute and then reconnect. This should clear the light. This will clear the check engine light but only if the problem causing the check engine light is fixed, otherwise the system will detect the fault again and the light will come back on.
Check
engine light comes on and off, these are indication that there is some
error code stored in your vehicles ECM. The engine module computer
needs to be scanned. These will give the code and as per the error code the
further problem can be detected and confirmed. The engine light
indicator blinks or remains steady on dash when engine computer
noticed any problem with any engine electrically operated components.
For
more help, I suggest you to refer the help links provided below. These will let
you know more about which areas to look, check, when there is engine light
coming up on dash panel.
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Click
the link below: -------
http://whoisbyme.blogspot.in/2012/06/malfunction-indicator-light-on.html
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http://howtobyme.blogspot.in/2012/02/check-power-train-message-with-orange.html
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http://whatisbyme.blogspot.in/2012/05/2007-toyota-highlander-hybrid-yellow.html
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http://whatisbyme.blogspot.in/2012/05/car-runs-fine-but-check-engine-light-is.html
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http://howtobyme.blogspot.in/2012/01/check-engine-light-with-codes-p2195-and.html
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http://schematicsdiagram.blogspot.com/2011/12/how-to-read-codes-from-check-engine.html
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http://schematicsdiagram.blogspot.com/2011/12/vehicle-smog-test-failed-due-to-no.html
http://schematicsdiagram.blogspot.in/2012/02/obd-code-is-cleared-but-check-engine.html
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http://schematicsdiagram.blogspot.com/2011/12/car-jerks-while-going-uphill-and-check.html
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http://schematicsdiagram.blogspot.in/2012/02/toyota-camry-check-engine-light-flashes.html
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These
details will help.
Thanks.
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