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Thread: BMW 20pin > 16pin ODB Connection Problems

  1. #1
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    Feb 2008
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    BMW 20pin > 16pin ODB Connection Problems

    I recently purchased this BMW 20pin>16pin OBD conversion cable,

    http://cgi.ebay.co.uk/ws/eBayISAPI.d...:MEWN:IT&ih=01

    I cannot seem to connect to the cars ecu, it starts to connect but then fails and says unable to connect to protocol. The cars a 1998 BMW 523 with the 20pin under bonnet diagnostic connector.

    Anyone have any ideas as i work as a self employed mechanic and wanted to use this to reset BMW's service/inspection lights and read fault codes etc. I've been very happy with how the ELM327 has been reading compatible 16pin OBD protocols.

    I read that it was compatibile with BMW this is why i bought the adaptor cable.

    Thanks!

  2. #2
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    Feb 2008
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    I'm sure there are experts here who can tell you - but if you're still searching you can always check out bimmerfest (com) - I think it's pretty much the core place for BMW-specific info that tends to get service related.

    Good luck!

  3. #3
    Constant Bitrate
    Join Date
    Oct 2005
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    UK
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    118
    Quote Originally Posted by TLDevelopments View Post
    I recently purchased this BMW 20pin>16pin OBD conversion cable,

    http://cgi.ebay.co.uk/ws/eBayISAPI.d...:MEWN:IT&ih=01

    I cannot seem to connect to the cars ecu, it starts to connect but then fails and says unable to connect to protocol. The cars a 1998 BMW 523 with the 20pin under bonnet diagnostic connector.

    Anyone have any ideas as i work as a self employed mechanic and wanted to use this to reset BMW's service/inspection lights and read fault codes etc. I've been very happy with how the ELM327 has been reading compatible 16pin OBD protocols.

    I read that it was compatibile with BMW this is why i bought the adaptor cable.

    Thanks!
    You can experience issues with scanners that search for protocol's and convertor cables such as this. I would suggest you look at getting a single protocol tool (ISO) or buy one of our handheld Peake Research tools that are designed for the job

    Gareth
    UKOBD

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