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Thread: Create an OBD Trouble Code?

  1. #11
    Registered User
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    Removing the fuel cap won't always set a MIL (check engine light). It depends on if the ECM is running a EVAP monitor test a senses a leak twice.
    The easiest fault I do is pull an injector plug while the car is running.

  2. #12
    Clover Grayscale's Avatar
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    May 2004
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    Arkansas
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    Wouldn't removing the O2 sensor do it?
    CarPC install is starting to come along again...

  3. #13
    Registered User
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    Not always, some things will immed. set a code (such as a misfire, bad MAF). Some codes are called "two-trip", meaning that the computer needs to see that fault twice to set a code.

  4. #14
    Newbie
    Join Date
    Apr 2005
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    15
    Quote Originally Posted by god_of_cpu
    I just finished building my OBD reader program for the ELM chip and I now need to test the Mode 3 and 4 functions for it that query and reset trouble codes. Anyone know of the easiest way to create a trouble code in my car so I can test reading and resetting the trouble codes.

    Preferably something easy to do that won't damage anything?
    Hi!!!!



    I need your help please!!!!

    I am writing code in Visual Basic in order to communicate to the ECU with ELM interface. I donít know very well how to write and read the commands I have to send/receive to talk to the ECU.

    Could you help me please?

    Iíll appreciate your help!!!

    Regards


    e-mail:[email protected]
    Esteban

  5. #15
    Constant Bitrate
    Join Date
    Mar 2004
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    Metamora, MI
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    156
    estaban2:
    Any reason why you posted the same message like a dozen times? It's a waste of everyone's time to reread the same post.

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