Limp mode on stock v6 after preloaded tune

Discussion in '2005+ Ford Mustang v6 4.0L Tech' started by Tuckis, Nov 21, 2020.

  1. Tuckis

    Tuckis Junior Member

    I recently bought a second hand sct tuner for my car and whenever I put the preloaded 93 octane tune on it, it throws the wrench light and puts my car into limp mode. when I check the codes it says its a p060c and a p2106. I have no idea where to start on trying to fix the issue because when I revert the car back to stock all of the codes go away and the car drives great.
  2. Dino Dino Bambino

    Dino Dino Bambino I have a red car

    Is the SCT tuner married to your car?
    You could have a corrupted preloaded tune. I suggest you contact Brenspeed and request an email tune for your car. Just provide them with details of your mods and they'll send you a new tuning file that you can upload to your tuner.
  3. Iceman62

    Iceman62 Bullitt 6005

    Well...I'm sure you know tuners are "married" to a vehicle (VIN locked), upon initial connection. In you case, with these codes, it seems like the tuner's not mated to your car:

    - P060c: Internal Control Module Main Processor Performance - means that the powertrain control module (PCM) has detected a main processor performance error.
    - P2106: Throttle Actuator Control System - Forced Limited Power (AKA = limp mode)

    You need to pay to unlock the tuner & then marry it to your vehicle. Here are some links to assist:
  4. Juice

    Juice forum member

    Huh? SCT tuner will not flash a car if it is not married to it. It will display a message along the lines of "wrong vehicle" and not load the tune.
    The processor performance code I have seen, it is a concern but will not cause a wrench light. (I got this code trying the canned tunes.)

    So on to the real issue, the wrench light/limp mode. Normally, this means a bad TB, but since restoring to stock clears it, the TB is likely fine. And it also indicates the tuner IS married to the car.

    I would suspect a corrupt tune or the tune was written for a different processor strategy. If strategy check is disabled, SCT will flash the pcm with a different strategh.
    crjackson2134 likes this.
  5. Tuckis

    Tuckis Junior Member

    The tuner is unmarried when I check on the device, I’m guessing it is something with the processor strategy or just a corrupted tune. I got an email back from sct asking for info on the tuner and my car. Once I hear back from them I’ll send an update on my situation.
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