What is OBD2 protocol interface

Discussion in 'Embedded Systems and Microcontrollers' started by ziyixue, Mar 25, 2014.

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  1. ziyixue

    Thread Starter New Member

    Mar 25, 2014
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    hello all,
    I know a little about obd2 , I want to know What is OBD2 protocol interface ,hope you all tell me .thank you very much.
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    It is a protocol for communicating with the onboard computer system in vehicles. It can be used for diagnostic purpose. I think that all new vehicles sold are required to support the OBD-II protocol. The OBD-II specification provides for a standardized hardware interface using a 16-pin J1962 connector. The latter connector is required to be within 2 feet (0.61 m) of the steering wheel with some exemptions. This allow for applications like using a smart-phone as an onboard dashboard car computer. However it should be noted that this site TOC will not allow for any discussion about using the ODB-II protocol. Then driving it is better to keep your eyes on the road, and not some app on your phone anyway
     
  3. PackratKing

    Well-Known Member

    Jul 13, 2008
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    If you want to condense all the interference by government in the run of things, OBD II is the absolute most useful mandate to come from Washington DC... EVER

    The 85.00 I spent for my OBD II reader, was the best investment in a long, long time...

    Some try and say, that this computer-controlled-everything in cars nowadays is impossible for the Saturday Shade-Tree DIY mechanic to work on ? I beg to differ...

    I spent since I was 12, polishing diagnostic skills on cars ... 65 now, and OBD does a marvelous job of pointing you in the right direction... you must still employ the other skills to avoid " scattergunning " expensive parts replacement...
     
    Last edited: Mar 25, 2014
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  4. MrChips

    Moderator

    Oct 2, 2009
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    Wouldn't that be nice to have on a computer? A computer that tells you why it freezes?
    Then again, if the computer is so smart, why doesn't it just fix itself?
     
  5. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    I am closing this thread as it violates AAC policy and/or safety issues.

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