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Thread: Reduced power on 2018 x5 xdrive40e

  1. #1
    Join Date
    Jun 2025
    Location
    Smithtown, NY
    Posts
    1
    My Cars
    2006 z4, 2013 x5

    Reduced power on 2018 x5 xdrive40e

    The check engine light (CEI) came on and I used Bimmer-tool to read and clear the codes. The CEI stayed on and then I got the reduced power warning on the dash, This is my wife's car and she is "mildly concerned" that I made things worse. The main battery was at 11.9 volts and 60% capacity and the auxiliary battery was at 12.5 and 100% capacity. It has been experiencing the transmission lurch when it when engine is cold. I listed the Bimmer-tool codes and the ISTA+ codes below. How bad does it look? What should I start with to identity the problem? Thanks.

    Bimmer-tool codes:
    21A114 Emergency Manager: free-running and disable the starting system of an electric machine
    21A011 Emergency Manager: request deactivation start device electric machine control device electric machine
    21A117 Emergency Manager: the request for the internal combustion engine power aufforderer of control electric machine
    21A113 The engine speed limit, level 3:as a result of emergency request from the control electrical unit machine-emergency Manager
    21A01C Emergency Manager: requirement EGS Forced upshift stage 1 of the control electric machine device
    135A08 Valvetronic actuator motor, position sensors, the plausibility of the signals to each other is implausible
    135808 Valvetronic actuator motor, position sensors, electrical: malfunction
    213901 Power management: consumer reduction active
    135C11 Valvetronic actuator motor, position sensors: signal implausible
    135608 Valvetronic System, no motion detected AHM Trailer module AIRBAG Airbags CIC Car Infotainment Computer


    ISTA+
    022D08 VSG: No current coding data stored
    104302 Absolute pressure sensor, intake pipe, plausibility, run-on: pressure too low
    120408 Charging pressure control: Switch-off as consequence
    135608 Valvetronic system: no movement detected
    135808 Valvetronic servomotor, position sensors, electrical: Malfunction
    164030 Exhaust camshaft sensor, electrical: short circuit to B+
    195002 Differential pressure sensor, tank vent valve, electrical: Short circuit to ground
    1F1A90 DME, monitoring, 5 V sensor supply: Voltage outside valid range
    222884 Information emergency run manager, DME: Request to reduce the output of the ele...

  2. #2
    Join Date
    Jun 2002
    Location
    Aberdeen, NC (yes, again)
    Posts
    24,193
    My Cars
    E39M5, E500 4WD
    Since you have ISTA, run the test plans.

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

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