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Thread: Touran 20tdi 2004 2 codes recurring

  1. #1
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    Touran 20tdi 2004 2 codes recurring

    Plugged in vcds , it says
    2 Faults Found:
    19794 - Control Circuit for Glow Plug Controller 1: Electrical Malfunction
    P3338 - 000 - -
    17978 - Engine Start Blocked by Immobilizer
    P1570 - 000 - -
    Codes can be cleared but they come right back ,and it still doesnt start . it fires then dies after a few seconds
    Any ideas im thinking maybe ecu issue . as it has 2 issues keep coming back .

  2. #2
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    I'm thinking immobiliser issue, but I'm also thinking the more knowledgeable on here won't be helping until you post a complete scan
    Last edited by Uwe; 10-20-2019 at 01:18 PM. Reason: Added link

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  4. #3
    Benevolent Dictator Uwe's Avatar
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    Yep, it's just about impossible to comment on an immobilizer issue without seeing the the other modules.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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  6. #4
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    Hi Sorry didnt realise .
    VCDS-Lite Version: Release 1.2
    Thursday, 17 October 2019, 15:58:48:49862
    Control Module Part Number: 03G 906 016 EH
    Component and/or Version: R4 2,0L EDC G000SG 7214
    Software Coding: 0000072
    Work Shop Code: WSC 39962
    VCID: 6DAD88713489
    2 Faults Found:
    19794 - Control Circuit for Glow Plug Controller 1: Electrical Malfunction
    P3338 - 000 - -
    17978 - Engine Start Blocked by Immobilizer
    P1570 - 000 - -

  7. #5
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    Just as an add on .Im not a vcds expert. I did a full scan but it appeared it wouldnt talk to the other modules .at the end, the only results i got were as ive already mentioned.
    I have tried going into other modules as well as engine ,but it just returns no results after a few attempts at communicating .

  8. #6
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    Isn't VCDS Lite only for K-line cars? Touran is CAN.

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  10. #7
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by MartinsX View Post
    Isn't VCDS Lite only for K-line cars? Touran is CAN.
    Early Tourans had ECUs (and TCUs, if equipped) that would respond both via K-Line and CAN.

    All the other systems in the car require a CAN connection for access.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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  12. #8
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