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OBD-II adapter for the Roadster?

Discussion in 'Roadster: Technical' started by matt_in_ca, Jan 26, 2018.

  1. matt_in_ca

    matt_in_ca Member

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    Los Angeles, CA
    My insurance provider uses an OBD-II dongle that isn't compatible with the Roadster's diagnostic port.

    I was wondering if anybody knows where I can purchase an adapter to go from the Roadster's diagnostic port to the more standard OBD-II?

    My apologies is this has already been covered. I figure it has, but haven't been able to find a thread covering the topic.
     
  2. gregd

    gregd Active Member

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    Hi Matt,

    See my post on the Diagnostic Port thread: Diagnostic port

    In summary, technically it can be done, but I'm not sure the insurance folks would (should) go for it.
     
    • Helpful x 1
  3. matt_in_ca

    matt_in_ca Member

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    Los Angeles, CA
  4. supersnoop

    supersnoop Tesla Roadster #334

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    • Helpful x 1
  5. gregd

    gregd Active Member

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    Hi Matt,

    That cable only provides a means to access the CAN signals of the Diagnostic connector on an OBDII-format connector. But it's just a cable; there doesn't appear to be any translation of the messages present on the Diag connector. As an analogy, one can plug a set of 1/4" headphones through a series of adapters into your iPhone, but if the podcast playing is in Navajo, you're still not going to be able to understand what they are saying. OBDII describes both the connector and the format of the messages available thereon. You need both in order for a generic dongle to be able to work.
     
    • Helpful x 1
    • Informative x 1

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