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OBC doesn't display speed or milage

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    OBC doesn't display speed or milage

    My 13 button obc will not display things like speed, range or mpg (display reads ----) but the clock, temperature, and code functions work fine. I have no problems with my instrument cluster. Any ideas what could be wrong or things I can try?
    1988 Alpinweiß 325i 4D 5SPD

    #2
    I removed the climate control/radio panel to get a better look at the connector... Everything looked fine except the green connector body was broken (no broken wires).
    Last edited by Derptastic; 05-11-2014, 11:22 PM.
    1988 Alpinweiß 325i 4D 5SPD

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      #3
      I just tried swapping in a known working computer from a 91 convertible and it worked. When I tried my unit in the vert it gave me a PPPP code... When I put it back in my car the error is still there. I tried pressing CODE and the reset button without any luck so I'm letting it sit disconnected for a little bit.

      I reinstalled the working obc in the vert and it continued to work fine.

      Is my computer toast, or it it possible my problems are due to a bad code plug in the back?
      1988 Alpinweiß 325i 4D 5SPD

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        #4
        The test you did confirms that your OBC is dead.
        The car makes it possible, but the driver makes it happen.
        Jim Levie, Huntsville, AL

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          #5
          Perhaps...

          but... I just removed the code plug from the back and re inserted it and now it doesn't give me the PPPP error anymore... Still no reading on speed/mpg etc.

          I just picked up another one on ebay... I'll try swapping the chips when I get it to see if that fixes it.
          1988 Alpinweiß 325i 4D 5SPD

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            #6
            Hi, you are welcome to this forum site.
            i do not have idea about this,
            i will suggest you to meet expert of the car

            _________________
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