2004 Jeep Grand Cherokee Logo
Posted on Sep 06, 2008
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2004 jeep grand laredo MIL(malfunction indicator light)

MIL light just came on .. engine currently not running any diifferent.Could this problem be caused by low quality fuel? Thanks for your assistance

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  • Anonymous Sep 08, 2008

    My malfunction indicator ligth came on and actually started to flash though the car didn't appear to run any differently.

  • scubazombie Oct 15, 2008

    Mine is a 2002 Grand Cherokee Limited, but having same issue with Malfunction Light coming on for no apparent reason.



    Is there a way to reset this myself rather than bringing to an auto center? Hate to pay money just to turn off a light!

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  • Posted on Sep 10, 2008
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Yes it can be caused by low quality fuel, and your gas cap not being installed properly. Best bet is the gas cap, so take it off and screw it back on. Then take your vehicle to autozone and hook up diagnostics to clear your MIL.

  • knot
    knot May 13, 2012

    The mil light does not normally come on for no reason. When it does come on its because the ecm has some incorrect values that are being received from the engine sensors. Even though the mil light may come on, the car will still be drivable because the system will use defaults setting to run from. If the mil light is on, there is a problem. If you do go to a parts store to have them reset the mil light, it will turn back on if there is a problem. Get the trouble codes from the vehicle when it gets scanned and that is the best place to start.

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