1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Fault code P2563 Turbocharger Boost Control Position Sensor Circuit: Implausible Signal

Audikiller Aug 26, 2018

  1. Audikiller

    Audikiller New Member

    9
    0
    1
    Hello guys

    I’m after for some help with my Audi A3 2.0 TDI 170 2010
    My coil light is flashing and seems to be happening more regularly now which I guess is a good thing as maybe able narrow the fault down if it’s on all the time.

    I’ve scanned the car and it is showing a fault code P2563
    Turbocharger Boost Control Position Sensor Circuit: Implausible Signal

    I know these are the possible problems
    • Wiring and/or Connections from/to Vane Position Sensor (G581) faulty
    • Engine Control Module (ECM) faulty
    • Vane Position Sensor (G581) faulty
      • Binding Issues due to Adjustment/Turbocharger
      • Excessive Carbon build-up
    • Vacuum Leak from/to Turbocharger (Wastegate) Actuator and Solenoid Valve for Boost Pressure Control (N75)


    The car drives fine no loss of power no limp mode

    I’ve read our posts on other forms no one seems to come up with an answer which is why I thought I would start my own post and hopefully finding a solution

    Lucky enough I have a 2007 Audi A3 170 so I can swap around sensors for testing.

    I’ve swapped the boost pressure converter sensor still the same I haven’t tried swapping any of the N75 sensors yet.
    I’ve checked all the houses and haven’t seen any kinks or splits.

    I have a feeling there is the sensor on the actuator can this be tested?????
    I’ve seen people mentioning using VCDS and on the measuring blocks using 034.2 34.3????
    My VCDS measuring blocks don’t seem to bring up the decimal point I only seem to get 034.

    Basically what I’m asking is has anybody had fault code P2563 and actually managed to fix it and what did they do

    Thanks for your advice and help



     
  2. Avatar

    Google AdSense Advertisement


  3. Floenlive

    Floenlive New Member

    9
    3
    3
    Hello,

    "I’ve seen people mentioning using VCDS and on the measuring blocks using 034.2 34.3????
    My VCDS measuring blocks don’t seem to bring up the decimal point I only seem to get 034. "

    34.2 = Block 34 column 2 = specified boost presure
    34.3 = Block 34 column 3 = actual boost presure
    :yes:

    Make a log of the specified boost and actual pressure and post your .csv file (
    advance measure value).

    thx
     
  4. Audikiller

    Audikiller New Member

    9
    0
    1
    Hello
    I’m still Struggling with My the VCDS measuring blocks.
    And I’m not having any luck uploading pictures either
     
  5. Audikiller

    Audikiller New Member

    9
    0
    1
    This is what getting on VCDS measuring blocks 001-254 only
    If if I’m looking at the right group number 034 then column 2 and 3 are load and lambda
    37467C44-4BE3-4A1C-BE38-248FC2AE4CAF.jpeg
     
  6. Audikiller

    Audikiller New Member

    9
    0
    1
    I’m not sure if I have a turbo boost control solenoid problem everything is in the green.
    03888270-17C7-4E73-A97A-72E0438F784E.jpeg
     
  7. Audikiller

    Audikiller New Member

    9
    0
    1
    I also have put the VCDS on put the measuring block 011 which on mine shows boost actual pressure and specified pressure
    I had the car standing still revving it up also took it for a drive and it stayed within the green settings CB786AAD-C601-4B50-B4E0-0D89B9B27003.jpeg

    What I don’t understand is why am I getting a fault code when all the readings are in the green
    Or is it just that it’s very intermittent maybe the signal break ever so slightly from millisecond or something then sets the code off.
    I’m now thinking that my next step will be to remove the manifold and turbo take the turbo off clean the Veins make sure there is no carbon buildup and also change the actuator at the same time just because it’s all off.

    Now is there a setting on the VCDS to set up the turbo actuator position?????
     
  8. Audikiller

    Audikiller New Member

    9
    0
    1
    I also have put the VCDS on put the measuring block 011 which on mine shows boost actual pressure and specified pressure
    I had the car standing still revving it up also took it for a drive and it stayed within the green settings View attachment 163864

    What I don’t understand is why am I getting a fault code when all the readings are in the green
    Or is it just that it’s very intermittent maybe the signal break ever so slightly from millisecond or something then sets the code off.
    I’m now thinking that my next step will be to remove the manifold and turbo take the turbo off clean the Vines make sure there is no carbon buildup and also change the actuator at the same time just because it’s all off
     
  9. Floenlive

    Floenlive New Member

    9
    3
    3
    you have to make a log of channel 11 (boost specified and boost actual).
    This in order to have a graph.
    read this topic in the link and you do the same with only channel 11.
    get the CSV file that you import into excel and make a graph with the 3 values.

    https://forums.audipassion.com/topic/150074-vagcom-et-les-logs/
     
  10. Audikiller

    Audikiller New Member

    9
    0
    1
    Thanks for the advice I’ll translate that link into English and post my findings.
    I have had the vcds running on measuring block 011 everything did stay within the limits and was in the green (not moving and revving the engine).
     
  11. Audikiller

    Audikiller New Member

    9
    0
    1
    Hello
    Just an update for any follow my thread
    I did some voltage checks on the G581 sensor
    1) is ground
    2) is output
    3) is 5 volts Input

    My output voltage ranged between 1.1v (no vacuum) 3.9v (with vacuum)
     

    Attached Files:

  12. Avatar

    Google AdSense Advertisement


  13. Audikiller

    Audikiller New Member

    9
    0
    1
    For anybody that is following my thread I eventually sent my car off to a garage super diagnostics specialist and they found the problem with my car they was running tests on the voltage and on the vaccum system around the actuator and eventually found that there was a vacuum leak down by that EGR cooler on a pipe.
    What was surprising was that even with all of the testing that I was doing with pressurising vacuum pipes etc I never found that drop.
    My advice If you’re 100% sure that your actuator is working and wiring is good then double triple check all of your hoses that go absolutely everywhere I never even noticed hose that they replaced.
     

Share This Page