VW T6 2018, excessive soot after HPFP repair

[jackthesoul]

VW T6 2018, 100k km total distance on my own, 2 months ago it stoped working on some cylinders, then return to normal work, and after 500km stoped again. Checking components, appear metal filings in injectors, HPFP failure.
- replaced HPFP
- replaced CR with valve and sensor
- flushed all pipes and fuel tank
- Injectors disassembled, cleaned, checked in testing machine, all good.

After that car started generate excessive soot. From time to time it's 1g per 10km, sometimes 1g measured per 2km. Calculated soot increase also. DPF Regeneration works efficiently. It starts and works smoth, power is fine, during acceleration 1-2k RPM sounds "hard" like you can hear every each combustion. No error codes except ones according smoking:
32110 - Diesel Particulate Filter (Bank 1)
P226D 00 [236] - Damaged or Subrate Missing
32119 - Particulate Matter Sensor
P24B1 00 [096] - Short to Plus
31104 - NOx Sensor 1 Bank 1
P2203 00 [100] - Signal too High

I assume all of them are due to soot in exhaust system. (Tailpipe is sooted also). Full scan below. Codes copied above appear after 100-200km after erasing. Pasted full data below in next code.

Sunday,26,November,2023,22:01:17:02043
VCDS Version: Release 20.12.0 (x64) Running on Windows 10 x64
www.Ross-Tech.com

Address 01: Engine Labels: None
Control Module Part Number: 04L 906 056 MG HW: 04L 907 445
Component and/or Version: R4 2.0l TDI H02 6425
Software Coding: 0011401C432401090000
Work Shop Code: WSC 00012 790 50316
ASAM Dataset: EV_ECM20TDI03004L906056MG 004004 (VN75)
ROD: EV_ECM20TDI03004L906056LT.rod
VCID: 7EA5ED3790770A4B01E-802A
3 Faults Found:

32110 - Diesel Particulate Filter (Bank 1)
P226D 00 [236] - Damaged or Subrate Missing
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 92751 km
Date: 2041.14.04
Time: 15:52:58

Engine RPM: 2051.00 /min
Normed load value: 0.0 %
Vehicle speed: 87 km/h
Coolant temperature: 91 °C
Intake air temperature: 3 °C
Ambient air pressure: 970 mbar
Voltage terminal 30: 14.367 V
Unlearning counter according OBD: 40
Particle sensor: time in op. mode measurement: 0.0 s
Particle sensor: measuring current calculated: 0.0 µA
Particle sensor: cleaning deviation reaction time: 0.138
Particle sensor: exhaust temperature: 21.3 °C
Particulate sensor: status condition automation: Regeneration following soot particles plausibility check
Particulate sensor: status condition automation: 4

32119 - Particulate Matter Sensor
P24B1 00 [096] - Short to Plus
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 92937 km
Date: 2041.14.04
Time: 19:23:57

Engine RPM: 2003.50 /min
Normed load value: 53.7 %
Vehicle speed: 84 km/h
Coolant temperature: 91 °C
Intake air temperature: 3 °C
Ambient air pressure: 970 mbar
Voltage terminal 30: 13.796 V
Unlearning counter according OBD: 39
Air mass at air mass meter 1: 136.8 kg/h
Standardized air flow ratio: 1.006 counts
Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: 0.65 %
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 78.36 %
Charge air pressure: specified value: 1.545 bar
Charge air cooler inlet: pressure sensor 1 bank 1: raw value: 1210 mbar
Mean injection quantity: 23 mg/stroke
Index of current engine mode: 25
Index of next requested engine mode: 25
Index of engine target mode: 25

31104 - NOx Sensor 1 Bank 1
P2203 00 [100] - Signal too High
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Mileage: 93134 km
Date: 2041.14.06
Time: 13:13:23

Engine RPM: 2604.75 /min
Normed load value: 63.5 %
Vehicle speed: 110 km/h
Coolant temperature: 91 °C
Intake air temperature: 1 °C
Ambient air pressure: 980 mbar
Voltage terminal 30: 14.414 V
Unlearning counter according OBD: 40
Air mass at air mass meter 1: 187.2 kg/h
Outside temperature sensor 1: B1: raw value: 0.5 °C
Mass airflow sensor 1 bank 1 airflow: raw value: 604.6 mg/stroke
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 64.32 %
NOx sensor before SCR cat conv: offset correction factor: 234 ppm
NOx sensor after SCR cat conv: offset correction factor: 0 ppm
Reducing agent quality sensor: urea concentration: 33.39 %
Reducing agent quality sensor: raw temperature value: 9.7 °C


Readiness: N/A

 

[Andnik]

Hi Jack the soul. did you ever get to the bottom of your problems? I have had the P226D and 32110 for a while now and its driving me crazy....New DPF New EGR New Turbo New Lambda probe.......god I hate this van and its "needs"

 

[jackthesoul]

Hi Jack the soul. did you ever get to the bottom of your problems? I have had the P226D and 32110 for a while now and its driving me crazy....New DPF New EGR New Turbo New Lambda probe.......god I hate this van and its "needs"

My issue was injectors.
Even though it has been check in Lab twice and no fault observed, replacement for brand new resolved all problem. It costed more than 1000 eur but worth it. Car works smothly. And no codes since 20 000km.

 

[Andnik]

Thanks for reply, Injectors is on the list of probable things to change. I have Black smoke on start and when heavy acceleration (or going up a very steep hill)