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Thread: How does the 'code' feature work?

  1. #1
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    Default How does the 'code' feature work?

    I mean, I know how to use it but how does it disable the car? Does it cut fuel, or something else?

  2. #2
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    Quote Originally Posted by tim eh? View Post
    I mean, I know how to use it but how does it disable the car? Does it cut fuel, or something else?
    If your refering to the code setting on the OBC, then I'm pretty sure its just telling the cars ECU not to start the fuel pump on turning the key to ignition, nor the fuel injectors from firing nor the ignition system from firing sparks.
    ie: just a complete non-obeyance of the engine to start and operate anything past the "ignition On" position of the key.
    ss2115.

    BMW 525i Touring - 1993 (current drive car).
    DS23 Citroen Safari - 1974 (restoration and modifications).
    Golf MkIII - 1997 (fun car and daughters learn-to-drive car)

  3. #3
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    Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.

  4. #4
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    Quote Originally Posted by repenttokyo View Post
    Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.
    Huh ?
    ss2115.

    BMW 525i Touring - 1993 (current drive car).
    DS23 Citroen Safari - 1974 (restoration and modifications).
    Golf MkIII - 1997 (fun car and daughters learn-to-drive car)

  5. #5
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    +1 What he say...?

    Quote Originally Posted by repenttokyo View Post
    Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.
    RICK
    BMW 1995 525i (Alpine White)

  6. #6
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    I thought it disables the starter.
    RICK
    BMW 1995 525i (Alpine White)

  7. #7
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    The OBC is an extension of the engine's ECU - it's a dumb terminal into the heart of it.

    This means when you set the code, the ecu will just make no effort to run the engine, the program will not start. It's like someone flipped off the power switch to the actual engine running bits of the ECU.

  8. #8
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    wow, no one has ever seen ghostbusters?

  9. #9
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    Quote Originally Posted by repenttokyo View Post
    wow, no one has ever seen ghostbusters?
    aaaaaah I was trying to figure out what I knew that from....

    so THAT'S how it works

    the reason I am asking is ... if it cuts fuel I may have a fuel delivery problem, if it cuts spark I may have a spark problem - just fishing for clues on a rare starting problem. I tried to start the car without first disabling the code feature the other day and then the problem presented itself.

    Quote Originally Posted by Rick L View Post
    I thought it disables the starter.
    nope starter cranks

  10. #10
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    It disables everything with running the motor - not just fuel, not just electrics - everything.
    It simply tells the ECU not to have anything to do with the engine.

    Therefore, your problem could still be anything. It may only be coincidence that it occured after trying to start the engine without the release code.

    But if it was to have been a catalyst, I'd start with spark plugs - they may have wetted and burnt off the electrode, or got some junk carbon specks between the electrode or around the centre tip and shorting the spark to the side.
    ss2115.

    BMW 525i Touring - 1993 (current drive car).
    DS23 Citroen Safari - 1974 (restoration and modifications).
    Golf MkIII - 1997 (fun car and daughters learn-to-drive car)

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