Question about Mercedes-Benz ML320

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Check engine lights comes on when engine running

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  • Anonymous Jan 31, 2009

    thecheck engine light is on

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Goto autozone and let them run diagnostic

Posted on Jul 08, 2008

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When the light comes on, one or more diagnostic trouble codes (DTC) are stored in the engine control module. These DTCs remain even if the light goes out. To address a Check Engine Light problem, the DTCs are retrieved and the appropriate troubleshooting information is followed in order to determine the problem.


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