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Thread: EFI Live Error 0371- Then error 0549 Ignition Off

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    EFI Live Error 0371- Then error 0549 Ignition Off

    HELLO ROOM.

    WHILE FLASHING A TUNE ON A 2020 2500 RAM ALSMOST AT THE END OF PROGGRAMMING THE ERROR 0371 TERMINATED FLASH BEFORE IT ENDED.

    NOW IM GETTING 0549 IGNITION OFF NO COMMUNICATION WITH TRUCK CM2450B ECM.

    ANY IDEAS IF THE ECM WENT BAD?

    THANKS


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    Teflon's Avatar

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    Re: EFI Live Error 0371- Then error 0549 Ignition Off

    Quote Originally Posted by jrguerrero View Post
    HELLO ROOM.

    WHILE FLASHING A TUNE ON A 2020 2500 RAM ALSMOST AT THE END OF PROGGRAMMING THE ERROR 0371 TERMINATED FLASH BEFORE IT ENDED.

    NOW IM GETTING 0549 IGNITION OFF NO COMMUNICATION WITH TRUCK CM2450B ECM.

    ANY IDEAS IF THE ECM WENT BAD?

    THANKS
    I am not sure with the 2020’s.

    Most of the time it’s low voltage that causes problems when trying to flash the ecm.

    The 0549 code would be just the key is in the off position and won’t communicate with the ECM.

    2016. Laramie 2500, 68RFE, CC 4x4. DRD Medical plan. factory rear air. 2” lift/level. 35x12.5, Revmax vb with deep pan. ARP 425 head studs.

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    Teflon's Avatar

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    Re: EFI Live Error 0371- Then error 0549 Ignition Off

    Quote Originally Posted by jrguerrero View Post
    HELLO ROOM.

    WHILE FLASHING A TUNE ON A 2020 2500 RAM ALSMOST AT THE END OF PROGGRAMMING THE ERROR 0371 TERMINATED FLASH BEFORE IT ENDED.

    NOW IM GETTING 0549 IGNITION OFF NO COMMUNICATION WITH TRUCK CM2450B ECM.

    ANY IDEAS IF THE ECM WENT BAD?

    THANKS
    Did you get it fixed?


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