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Thread: clearing error codes

  1. #1
    Regular Member shadow.warrior's Avatar
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    Default clearing error codes

    Hi Guys.

    I have replaced a faulty sensor. But the check engine light is still on. Is there a way to clear/reset the error codes without leaving the battery unplugged all night?

    i tried turning the key on and off 25 times, but this was a waste of time.

  2. #2
    Ex Vec-C Admin ed taylor's Avatar
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    Vehicle : Vectra Estate

    Trim : Elite

    Engine : 3.2 V6

    Year : 04

    Mileage : 000

    Default

    After quite a while the code if it is regarded as historic, as it should be when the faulty part is replaced. If you wait a while longer the fault code should disapear.It might take a while as I say.

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    Regular Member shadow.warrior's Avatar
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    but i need it gone now to see if the new sensor has in fact resolved the issue. if not then i need to replace something else. which is highly likely.

  4. #4
    Ex Vec-C Admin ed taylor's Avatar
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    Vehicle : Vectra Estate

    Trim : Elite

    Engine : 3.2 V6

    Year : 04

    Mileage : 000

    Default

    You need a code reader then, one that will erase the fault code. As far as I am aware there is not a !quick" way to do it without the "tools" "ie" a code reader.

  5. #5
    Ex-Staff Full Member John LE's Avatar
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    Vehicle : Facelift Insignia/Corsa D

    Trim : LE/VXR

    Engine : 2.0 cdti/1.6 Turbo

    Year : 13/07

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    Disconnect the battery for 15mins, that should clear any lights on the dash, just make sure you have the code for the radio

  6. #6
    Regular Member barney490's Avatar
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    either a trip to the stealers or get yourself a code reader that can read and reset fault codes, probably a good thing to have anyway as a Veccy owner.

  7. #7
    Regular Member LADmachining's Avatar
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    If the light is still on, then the fault hasn't been rectified.

    When a fault goes 'not present', the code is still stored but the engine management light will be extinguished. It is at this point that 30 ignition on/off cycles will clear the 'not present' code.

    Disconnecting the battery won't make any difference if the fault is still ocurring!

  8. #8
    Ex-Staff Full Member John LE's Avatar
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    EML light will come on when car is started if there are stored codes, disconnecting the battery will clear any stored codes I think you'll find. Obviously if there is still a fault then eml will still show but at least by disconnecting the battery you are eliminating stored codes

  9. #9
    Regular Member LADmachining's Avatar
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    But depending on the nature of the fault, the codes can re-appear as soon as the system is powered-up and the ECU runs diagnostic checks on the connected systems and sensors.

  10. #10
    Regular Member shadow.warrior's Avatar
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    Default

    thanks for the help guys. i think i might fork out and buy a code reader.

    the best deal i have found so far is: $88 for a serial connector(need serial to usb converter to connect it to laptop). The sw is free. It updates in real time and shows you all sorts of interesting read outs. Can read and clear codes too.
    http://www.obddiagnostics.com/
    has anyone had any experience with it? is there any others worth looking at before i buy this?

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