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Thread: Fault code 17950

  1. #21
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  3. #22
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    So:
    None of the components/sensors that should get their ground from this "220 Earth connection (sender earth), in engine wiring harness" has any continuity to ground.
    All have continuity between each other:
    G62 - Coolant tep. sensor
    G40 - Hall sensor
    G42 - MAP sensor
    N18 - EGR valve
    G28 - engine speed sensor is the only one I have not checked separatly

    I havent found any diagram for every ground point in the car - so I have cleaned the ones I found:
    Under the battery tray
    On the engine
    In the plenum chamber (front of the ECU)

    What does this even mean:
    "Earth connection (sender earth), in engine wiring harness"

  4. #23
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    If this is correct - then I have a broken/damaged wire - or Im not getting whats wrong - how can any of it work if theres no ground??:
    http://web.mit.edu/dennis/www/vw/grounds.html
    I put my hubby to clean the plenum ground point when I had to run... and he tells me know that ground have been cleaned before!!
    Whaaat a....??!!

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  6. #24
    Benevolent Dictator Uwe's Avatar
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    If it were mine, I'd probably run a new ground wire (even if only temporary) to the affected components, just to verify that this fixes the problem(s).

    -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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  8. #25
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    Shall do - hubby said the same =)

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  10. #26
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    It did not help with ground wire. Same fault code on one of the sensors on the Throttle.
    Drove to a friend and got a good known VW Throttle to test with.
    I remembered to take a picture from the collections of the groundwires to the sensors... shall put it here later. Forgot to take picture of the ready made ground wire - but I used something called Heat Shrink Solder connectors and a 5 square mm wire, around 15 cm long piece to the ground connection by the ECU.
    Want to get home some VW heat shrink connectors, where can I find them in Europe?
    Going out to test the throttle.....

  11. #27
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    Wrong size on the throttle - so have to find an other one to test with.

    Connection of the brown/blue wires from the sensors to the ECU connector (on the left in the picture):

    This is where I attached the ground wire.
    Last edited by Uwe; 06-21-2019 at 03:07 PM. Reason: Fixed in-line image

  12. #28
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    Fixed

    So - the car is fixed.
    It WAS the throttle - so called "VDO" looks like a pirate copy to me.
    Look at these two pictures. I took a part the VW original Throttle body in plan to change the electric inside of it. NOT easy so gave up that idea =)
    But - doing that - I could get a look at what a original throttle body electric connections looked like:
    First picture of the original:


    This is how the throttle body mounted in the car looked like:


    Lesson learned:
    Trust the fault code.
    Dont know why - but there is no nead for continuity to ground on wire number 108 on ECU.
    The numbers on Measuring block 062 - for accelerator pedal - are still looking same: 14 % on both sensors at rest - and climbing up when pressin the pedal - equally!

    At least for Golf IV - 1,6 engine code BCB.
    Last edited by Uwe; 06-22-2019 at 06:38 PM. Reason: Fixed images

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  14. #29
    NostraJackAss Jack@European_Parts's Avatar
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    So did you fix the OXS heater fault yet?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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  15. #30
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    Jack - I forgot all about it.
    A fuse then, on the brown wire coming right from the ECU?
    What size would be correct? 10A?
    The other blue/yellow wire to the heater, is fused 10A.
    Also - I need to get home those special connectors for VAG, before doing this proper. Or would it be ok to use the same kind of heat shrink connectors I used for the ground point?
    Like these:
    https://www.ebay.com/itm/100Pcs-Heat...-/132699448065

    Thank you Jack =)

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