Hi, Try some diesel DPF cleaner.
Example.

Wynns Diesel Particulate Filter Cleaner 325ml | Halfords UK

Shop the latest Wynn's Diesel Particulate Filter Cleaner is a chemical treatment for diesel engines. at Halfords UK

www.halfords.com

Hoggy.

 

does this stuff work like a terraclean gonna need 2 bottles and terraclean not much more or could it be the sensor ?

 

A refugee from the mk1 section here, so not sure what engine you have, but it sounds like the turbo actuator is stuck. It could be the actuator or the variable vanes in the turbo itself due to carbon build up(more likely) If you can reach the actuator you should see a vacuum hose attached, if you can remove with the engine running you should see the arm moving as vacuum is applied/removed.

 

Recommendations from Ross Tech wiki page -

18995/P2563/009571 - Turbocharger Boost Control Position Sensor Circuit: Implausible Signal

Possible Symptoms

• Malfunction Indicator Lamp (MIL) ON
• Power Loss

Possible Causes

• 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)

Possible Solutions

• Check/Replace Fuses
• Check Wiring and/or Connections from/to Vane Position Sensor (G581)
• Check Vane Position Sensor (G581)
  • Perform Ohm Test
• Check Mechanical Turbocharger Operation
  • Rule out binging and excessive Carbon build-up
• Check Vacuum Supply from/to Solenoid Valve for Boost Pressure Control (N75) and Turbocharger (Wastegate) Actuator

Special Notes

• This fault code may be caused when the Actual and Specified Turbocharger requests are considered Implausible by the engine controller.

When this fault is found in the NAR Market 2.0L CR TDI:

• Measuring Block Group 034.2 (specified) and 034.3 (actual) G581 Vane Position Sensor values can be logged to see if the fields should mirror each other or deviate to confirm a problem.
• NAR market vehicles that had TPI 2025464 | TSB 21-11-01 -or- the latest TPI 2025464/5 | TSB 21-13-01 completed to prevent no-start conditions in cold weather caused by a frozen intercooler may want to see this thread.

 

ill get to looking at it sun and check soot levels might try a forced regen to, also seen dpf foam cleaner and that apparently goes straight in via a hose hole so may try that gonna take it apart tomorrow and see if i have vacuum
ill keep you all posted as may help others

 

well changed the boost control position sensor today code has now gone , i never had to calibrate it !

should i tell the car it has a new one ? and if so how ?

cheers bob

 

@ bobbobb - Do you have the part number for it, and can you post a picture of the one you removed and also one of where it goes? That would be a nice addition for the Forum.

Only thing I could find was in the Workshop Manual shown below but I didn't see any comments on running an Adaptation. Generally speaking, anytime an electronic component that has variable settings is replaced; (e.g. servo, positioner, etc.) there's usually an Adaptation or Basic setting required so the ECU can verify the new values and ensure they are withing the expected range listed under the related measurement block.

I looked through Ross Tech's Forum and they have an existing post on this topic which might help. If it doesn't answer your question, just add to it and see what they say. You may need to upload your fault scan as they usually ask for it to prove you're a VCDS owner.

Images from Workshop Manual Fuel Injection TDI & Glow Plug System, CFG - D3E8029B417

 

@ bobbobb - I just found this on YouTube so it looks like there is an Adaptation required -

• Address 01-Engine
• Basic Settings - 04
• Turbo Charger Boost Control Solenoid (G581/N75) Adaptation

Looks like measurement Block 120 which you can look up and find the expected values. Just 'mouse over' each of the four fields to the right and you should get a little text bubble to display the values -

 

so i changed the boost position sensor g581 part number is now 03L198716L and this got rid of the fault but I cant run an adaptation as vcds does not have that option in mine or my chassis car wont allow it . to change the sensor pics attached the first one is the sensor fitted second is the vacuum pipe and the third is the 3 bolts that hold sensor the hardest is the second locking nut on the shaft , its easy to get it off but tightening the new one on i need to bend a 10mm spanner. took just over a hour and a half to do,

 

Thanks for the pictures.

• Have you updated your VCDS software? It's currently at Release 22.3.0. Link here.
• Are you using a legit Ross Tech VCDS cable/connector?
• Are you running the VCDS-lite version?

Failing that, it might be worth a post on the Ross Tech Wiki linked in my previous post. Or just bite the bullet and see if Audi or a local Indy can run it for you.

That's really odd you can't run the Adaptation...

 

just updated to 22.3 mine was 21.3 after i had updated it from 11.11 thought it was upto date but obviously not when i looked going to try this tomorrow then hopefully a regen
fingers crossed