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Reset the check engine light on 2005 Expedition

How do you reset the check engine light on a 2005 Ford Expedition?

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  • pin1 Jan 24, 2009

    Actually I went to Advanced Auto and they ran a check for codes.  The codes were P2104 and P2112.  After they checked the codes I had them reset.  Now just need to find what the codes mean and see if they reoccur in the future.

  • pin1 Jan 24, 2009

    Thanks!  I did just clean the inside of the throttle body so I'll see how that works before replacing the throttle actuator control.

  • Anonymous Mar 28, 2014

    started to pulling and gas didnt respond for seconds then work but check engine light came on

  • Anonymous Mar 30, 2014

    engine light on

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You have to take it to a shop to have it reset. if it tripped, it means something isn't working right, and that often leads to lower gas mileage if it isn't fixed, costing more money in the long term

Posted on Jan 24, 2009

  • Shane Peterson Jan 24, 2009

    I did some research and found that your codes both sorce back to the electronic throttle control on your engine.



    [P2104-Throttle actuator control system-Forced Idle]

    [P2112-Throttle actuator control system-Stuck Closed]



    Having not examined the vehicle, I'd suggest two things for you:



    First- replace the controller, which is attaced to the throttle body with one from a salvage yard.



    secondly- get some old rags and clean inside the throttle body using carb cleaner.



    with luck, this should clear up your problem.

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SOURCE: reset ems (check engine light) on ford expedition

Try to remove positive baterry terminal for 20 minutes and install it nack. That will reset your ECU and it will run little rought tilll learn new change in 02 sensor.

Posted on Feb 20, 2010

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Reset ems (check engine light) on ford expedition


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The p2104 code was set because the PCM had to set the idle speed, the p2112 was set to indicate that your throttle body was stuck closed. You can try to remove the throttle body and clean it, check to ensure that it opens smoothly, check the TPS connector to ensure that it is plugged in correctly, reset the light and if the problem returns, you will probably have to install a new throttle body assembly. Hope this helps, let me know

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