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Thread: A0B4 & A0C1 code, wont start - replaced starter, ground strap

  1. #1
    Join Date
    Feb 2023
    Location
    kennesaw, ga
    Posts
    2
    My Cars
    08 BMW 335i conv

    A0B4 & A0C1 code, wont start - replaced starter, ground strap

    Got the A0b4 code, so replaced the starter and ground strap - when i press the button a get a click that sounds like the starter but will not crank.

    here is the kicker, when i jump it it starts. battery is only a few months old, has full charge and altenator is working, getting 14.6 voltss when running, holding 12 volts so i dont think in t is the battery.

    now is has the the orginal Aob4 & a0c1 codes

  2. #2
    Join Date
    Aug 2008
    Location
    North Potomac, MD
    Posts
    1,058
    My Cars
    2011 E90 328i
    What happens to battery voltage when you try and start the car just with the internal battery. You may have a current draw that is more than the battery can take.

  3. #3
    Join Date
    Jul 2010
    Location
    Whitby, ON, Canada
    Posts
    321
    My Cars
    335GT & Z3 M Roadster
    Anything below 12.6v standing voltage on the battery is too low and shows a bad battery images.jpg

    Sent from my SM-F956W using Tapatalk
    My Rides:
    2016 f34 335GT stage2+ MHD FBO, custom carbon throughout!

    2000 Z3M
    too many upgrades to mention


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