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Thread: XF7, Negative Response Code

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    Tuner in Training HemiX2's Avatar
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    XF7, Negative Response Code

    Sorry, the Title should be X7F, Negative Response Code. I have two Hemi LX vehicles with the same type Mercedes NAG1 transmission in them and am trying to load the complete transmission file from one into the other one and keep receiving this code. Does anyone know what the following code means and how to correct it? The code is, "X7F, Negative Response Code". Both vehicles and all files are licensed. Is there some secret to loading a file from one vehicle to another when everything is properly licensed?
    Last edited by HemiX2; 10-06-2020 at 09:27 AM.
    Two (now Three) Hemi's, an 05 5.7 Magnum, an 06 300C SRT8 and an 06 5.7 Jeep Grand Cherokee, all somewhat modded. The 5.7's are modded almost the same with advanced (10* for Maggie and 6* for the Jeep) FRI Sidewinder cams/6.1 valve trains, ported/milled heads w/new valve seats, SC, DS and HP Tuners, headers, cat. backs, underdrive pulleys, SOS coils, catch cans, 90 mm throttle bodies, plus a bunch of cosmetic stuff. 06 300C SRT8, Comp. Cammed, HPT tuned, Foose wheels, 85 mm TB.