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Thread: OBD I or OBD II?

  1. #1
    Join Date
    Oct 2008
    Location
    london
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    840ci

    OBD I or OBD II?

    Hi all,

    Is there a way of checking if my 840 is OBD I or OBD II from the VIN?

    Cheers

  2. #2
    Join Date
    Mar 2017
    Location
    Milwaukee, WI
    Posts
    36
    My Cars
    1996 BMW 850C1 M73
    Model year 96 and newer in the us were required to be OBDII. But my 96, 10/95 build does not have the connector.


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  3. #3
    Join Date
    Feb 2010
    Location
    Hampshire UK
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    6,597
    My Cars
    99 840ci Sport Indv
    None of them do, they all retained the 20-pin round connector in the engine compartment even though they are OBDII
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  4. #4
    Join Date
    Mar 2006
    Location
    Harrisburg, PA, USA
    Posts
    180
    My Cars
    x5, 750i, 850Ci, 850CSi
    Quote Originally Posted by Higgilo View Post
    Model year 96 and newer in the us were required to be OBDII. But my 96, 10/95 build does not have the connector.
    Quote Originally Posted by Timm View Post
    None of them do, they all retained the 20-pin round connector in the engine compartment even though they are OBDII
    That's intersting, because my 9/95 build '96 850Ci has both the round connector under the hood and the typical OBD-II connector under the driver's side dash. Although it doesn't (and never did) have the coin holder in the driver's door.

    Mike Barrett
    Mike Barrett
    94 850CSi, Hellrot over silbergrau dunkel/silbergrau hell
    96 850Ci, Oxfordgrun over silbergrau hell

  5. #5
    Join Date
    Mar 2017
    Location
    Milwaukee, WI
    Posts
    36
    My Cars
    1996 BMW 850C1 M73
    Quote Originally Posted by mbarrett635 View Post
    That's intersting, because my 9/95 build '96 850Ci has both the round connector under the hood and the typical OBD-II connector under the driver's side dash. Although it doesn't (and never did) have the coin holder in the driver's door.

    Mike Barrett
    Then mine must have been very neatly removed because I can find no evidence of it ever existing.


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  6. #6
    Join Date
    Dec 2007
    Location
    Dallas, TX
    Posts
    10,060
    My Cars
    '93 850Ci- Daily Driver
    OBD II cars ALL have the 16-pin flat connector, otherwise it couldn't be read by State emissions testing facilities - probably yours was removed as you suspect.
    '93 850Ci - Mineralweiss Metallic
    ALPINA B7 -Alpinweiss III

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  7. #7
    Join Date
    Jan 2011
    Location
    Nottingham, UK
    Posts
    892
    My Cars
    E31, E36/7, E61
    Only 20 pin on my 7/97, UK car.

  8. #8
    Join Date
    Dec 2010
    Location
    Newbury Park, CA
    Posts
    94
    My Cars
    1995 BMW 850CI
    I believe all 840's 96 and newer and all 850's 95 and newer have the flat OBD-II connector (at least in the US, not sure about other countries). I've read where the clips to the connector can break and the owner zip-tied it up so maybe you'd have to look up higher behind the dash.
    EricinConejo

    1995 850CI, 1959 Chev Impala, 1965 Cessna 172, 1986 Mustang GT, 2001 VW Beetle, 2002 Mustang GT, 2005 Dodge Durango Hemi, 2006 Acura MDX

  9. #9
    Join Date
    Feb 2016
    Location
    Norwalk, CT
    Posts
    256
    My Cars
    1995 840Ci, 2007 328xi
    I seem to remember this being discussed before. IIRC, US spec cars had the standard OBDII port 1996 and newer, while it did not have to be fitted to non-US cars like yours. It can be confusing because US spec OBDII were produced at the same time as OBDI cars. I don't recall any M62-powered 840's being OBD1. Certainly no M60's are OBDII.

    To answer the original question, perhaps try realoem.com. Pull up your car by VIN. Look at something that only an OBDII car would have like 4 lambda sensors. If your car requires 4, it is OBDII. If 2, it is OBDI. I know realoem isn't perfect, but it might give you the right answer. Or check the 8-series registry: http://www.8coupe.com/Production/Chassis.aspx. You could also call your BMW dealer for a more reliable answer.

    Brett

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