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Vehicle Alert #925: DMC HW: Common Mode Sense Fault

Discussion in 'Roadster' started by bpangburn, May 15, 2015.

  1. bpangburn

    bpangburn Member

    Joined:
    Mar 26, 2015
    Messages:
    75
    Location:
    St. Francisville, LA
    I installed OVMS on #278 earlier this week and everything went well, however I've gotten a "Vehicle Alert #925: DMC HW: Common Mode Sense Fault" a few times. Does anyone here know what that means and if it's any reason for concern? Everything with OVMS and the car in general seems fine.

    Thanks.
     
  2. Curt

    Curt Roadster Signature #55

    Joined:
    May 13, 2013
    Messages:
    310
    I don't know what it means, but I just got this message immediately after plugging in a few minutes ago. Charging continued without any problems, though, so I will just keep an eye on it.
     
  3. bpangburn

    bpangburn Member

    Joined:
    Mar 26, 2015
    Messages:
    75
    Location:
    St. Francisville, LA
    Paraphrasing here. My Service Center indicated that it's a (temporary) failure to charge and can be triggered by local power fluctuations. If the car is charging normally after the error then you're probably OK. If not, you'll need to have it checked out with a SC.

    Pure speculation, but if it's a power fluctuation and keeps happening then you might want to try another charger and/or location/outlet before going to a Service Center.

    Note that I still get this error about once ever week or two at random times.
     
  4. wiztecy

    wiztecy Active Member

    Joined:
    Apr 29, 2012
    Messages:
    2,721
    Location:
    Santa Cruz, California, United States
    My MC240 charger never threw that fault, my UMC does occasionally and the car won't recover unless the charge-port is closed/opened and the UMC is unplugged/plugged. Also the chargepoint charger at my work does this upon almost each initial charge connection but recovers.
     

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