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The check engine light is on because the ECU has detected a problem with the emissions system. If you reset the light without repairing the problem it will just come back on. Have the ECU scanned with an OBD2 scan tool which will tell you the code that has been set. This code will lead you in the direction of the problem. Once you repair the problem you can reset the light with the same OBD2 scan tool.

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13y ago

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