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This is an SOS as I'm totally stumped and the issue is quite dangerous - my '07 E92 (104k miles) keeps going into limp mode at any speed and the error code is always 5E19 - DSC CAN DME/DDE Torque Reduction Not Possible;engine torque not adjustable. The limp mode is always very violent with the car "jerking" like crazy. I'm stumped by this issue. I turn the car off and on and it starts fine but soon goes into the violent limp mode when the car reaches operating temperature. Replaced all vacuum lines, retightened charge pipe and inlets; installed new spark plugs, coils, TMAP sensor, throttle body; resat ECU and DSC connections; cleaned wheel speed sensors; replaced post *** O2 sensors (car had thrown signal errors for these in the past) and still hitting limp mode + 5E19.
It's driving me nuts and my wallet is not amused at all. It's also a serious safety issue if it occurs while driving on the freeways. Any help, please? Thanks!
Last edited by E39Only; 05-24-2017 at 12:38 PM.
Member
Replaced the DME and its cooling fan and all is well now. Cost $1,500 including install and flashing. Got a great deal at BMW Santa Ana. I learned after the fact in e90postforum that a complete reflashing of the old DME at the dealer probably would have fixed my issue. In any case the car runs fantastic. It's unbelievable what a new DME does.
I got the old DME which I now believe is probably good and just required a fresh reflash.
Last edited by E39Only; 05-24-2017 at 12:40 PM.
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