Hello everybody's.
I need help to see if there's a mistake or not, I don't know the codes so well.
I also send one photo, where I take DPF values, are they values that need to be monitored or do I look badly?
VCDS Version: 20.12.0.1 UDS.

Skoda Octavia III 2017/18 2.0 TDI CR 110Kw

Thank you guys.

DPF Picture:
click on me

There is LOG:

Thursday,21,October,2021,18:58:48:00009
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.12.0.1 (x64)
Data version: 20201125 DS322.1

Chassis Type  NE-SK37 (3Q0)
Scan: 01 03 08 09 10 13 15 16 17 18 19 42 44 4B 52 5F 69 6D 75

01-Engine -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
18-Aux. Heat -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
4B-Multifunc. Module -- Status: INTERFACE NOT COMPATIBLE 
52-Door Elect, Pass. -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
69-Trailer -- Status: Malfunction 0010
6D-Trunk Elect. -- Status: Malfunction 0010
75-Telematics -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CRMB)       Labels:. 04L-907-309-V1.clb
   Part No SW: 04L 906 026 BN    HW: 04L 907 309 R
   Component: R4 2.0l TDI   H24 7607  
   Revision: B5H24---    
   Coding: 0119001A043401090000
   Shop #: WSC 56731 107 00000
   ASAM Dataset: EV_ECM20TDI01104L906026BN 004004
   ROD: EV_ECM20TDI01104L906026BN_004_AU37.rod
   VCID: 77FD5EDBCECD4D3C33-8022

No fault code found.
Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:* 5Q0-907-379-ESP-V1.clb
   Part No SW: 5Q0 614 517 AM    HW: 5Q0 614 517 AB
   Component: ESC           H25 0312  
   Revision: 00000000    Serial number: 62057000001551
   Coding: 2507629124230975407A060440C724A446249002600224723063F070C002430000000012121212B8586C384E4484EE
   Shop #: WSC 73430 031 00000
   ASAM Dataset: EV_Brake1UDSContiMK100ESP 036010
   ROD: EV_Brake1UDSContiMK100ESP_036.rod
   VCID: 7CF741F7F7EB6E645E-8028

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 5G0-907-044.clb
   Part No SW: 5E0 907 044 AR    HW: 5E0 907 044 AR
   Component: Climatronic   H04 2001  
   Revision: 00001K00    
   Coding: 02010104004111011005000800101022
   Shop #: WSC 73430 031 00063
   ASAM Dataset: EV_ACClimaBHBVW37X 006146
   ROD: EV_ACClimaBHBVW37X_006_SK37.rod
   VCID: 75E154D3D4C13F2C21-8020

   Fresh air blower control module (front): 

   A/C pressure/coolant temperature sensor: 

   Air quality sensor: 

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 5Q0-937-08X-V2.clb
   Part No SW: 5Q0 937 086 BL    HW: 5Q0 937 086 BG
   Component: BCM PQ37BOSCH 034 0242  
   Revision: --------    Serial number: 865820071701BD
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_BodyContrModul1UDSBosc 018001
   ROD: EV_BCMBOSCH_018.rod
   VCID: 0501241384212FAC31-8050

   Wiper motor control module: 
   Subsystem 1 - Part No SW: 5E1 955 119 A    HW: 5E1 955 119   Labels: 5QX-955-119-V1.CLB
   Component: WWS371 170628  051 0915 
   Serial number: 887353F0401717900193
   Coding: 164DDD

   Rain/Light Recognition Sensor: 
   Subsystem 2 - Part No SW: 5Q0 955 547 B    HW: 5Q0 955 547 B  Labels: 5Q0-955-547.CLB
   Component: RLHS  042 0105 
   Serial number: S5Y17M08D14H12M14S28
   Coding: 00885D

   Anti-theft alarm system sensor: 
   Subsystem 3 - Part No SW: 5Q0 951 171     HW: 5Q0 951 171 
   Component: Sensor, DWA  005 0316 
   Serial number: 000000000ZY163401XPG

   Alarm horn: 
   Subsystem 4 - Part No SW: 5QD 951 605     HW: 5QD 951 605 
   Component: Sirene, DWA  005 0314 
   Serial number: 00002856223971402420

   Roof shade control module: 
   Subsystem 5 - Part No SW: 5E9 959 591 C    HW: 8V3 959 591 A
   Component: J394 PS24.402  H03 0004 
   Serial number: 0000FST001PGXX000000
   Coding: 991800

   Humidity sensor: interior: 

5 Faults Found:
568086 - Databus 
          U1123 00 [008] - Received Error Message
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Confirmed - Tested Since Memory Clear

568342 - Databus 
          U1123 00 [008] - Received Error Message
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Intermittent - Confirmed - Tested Since Memory Clear

263442 - Siren / Alarm Horn for Anti-Theft Alarm System 
          B131D F7 [008] - No Release by Immobilizer
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 198
                    Mileage: 197740 km
                    Date: 2021.10.10
                    Time: 12:56:30

204546 - Remote key 2 
          B147A 18 [008] - Current Too Low
          Intermittent - Confirmed - Tested Since Memory Clear

262936 - Sensor for anti-theft alarm system 
          B1330 29 [008] - Signal Implausible
          Intermittent - Confirmed - Tested Since Memory Clear


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 5Q0-919-294.clb
   Part No SW: 5QA 919 294 B    HW: 5QA 919 294 
   Component: PDC 8 KanalH07 0044  
   Serial number: 000308418617217
   Coding: 0471051141
   Shop #: WSC 73430 790 00063
   ASAM Dataset: EV_EPHVA18AU3700000 009035
   ROD: EV_EPHVA18AU3700000.rod
   VCID: 4B95D22BE2C519DCA7-801E

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 3Q0-907-572.clb
   Part No SW: 5Q0 907 572 J    HW: 3QF 907 572 
   Component: ACC BOSCH MQB H10 0654  
   Coding: 2B00600901FFC728949C810500400600000000000000000000
   Shop #: WSC 73430 790 00063
   ASAM Dataset: EV_ACCBOSCHVW416 002006
   ROD: EV_ACCBOSCHVW416_002_VW37.rod
   VCID: 3E738BFFA177BC7430-806A

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 3Q0 959 655 BH    HW: 3Q0 959 655 BH
   Component: Airbag VW21   006 0703  
   Revision: --------    Serial number: 003W4PFFYMU8
   Coding: 98CCC000000000005C5400CC000840000065
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_AirbaVW21TS6VW48X 001014
   ROD: EV_AirbaVW21TS6VW48X.rod
   VCID: 0501241384212FAC31-8050

   Crash sensor for side airbag: driver side: 
   Subsystem 1 - Part No SW: -----------    HW: 454 002 607 17
   Component: SideSensor_Df  008 0887 
   Serial number: 35700000000496E4462L
   Coding: 2D2D2D

   Front Passenger's Side Airbag Crash Sensor: 
   Subsystem 2 - Part No SW: -----------    HW: 454 002 507 17
   Component: SideSensor_Pf  008 0887 
   Serial number: 35800000000CD969972/
   Coding: 2D2D2D

   Rear Side Airbag Crash Sensor (on driver's side): 
   Subsystem 3 - Part No SW: -----------    HW: 454 802 307 17
   Component: SideSensor_Dr  301 0148 
   Serial number: 351005DE5BC0E000000/
   Coding: 2D2D2D

   Passenger side rear thorax airbag crash sensor: 
   Subsystem 4 - Part No SW: -----------    HW: 454 802 507 17
   Component: SideSensor_Pr  301 0148 
   Serial number: 35200ACEADC10000000$
   Coding: 2D2D2D

   Crash sensor for front airbag: driver side: 
   Subsystem 5 - Part No SW: -----------    HW: 454 802 506 17
   Component: FrontSensor_D  304 0149 
   Serial number: 35500C74405100000003
   Coding: 2D2D2D

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5Q0-953-549.clb
   Part No SW: 5Q0 953 507 GD    HW: 5Q0 953 549 F
   Component: Lenks. Modul  003 0140  
   Revision: --------    Serial number: 12081704400724
   Coding: 1400
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_SMLSKLOMQB 020002
   ROD: EV_SMLSKLOMQB_018_VW37.rod
   VCID: 7EF34BFFE1F77C7470-802A

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5G0-920-XXX-17.clb-SRI3
   Part No SW: 5E0 920 781 E    HW: 5E0 920 781 E
   Component: KOMBI         203 1440  
   Coding: 07A50A002980000801882A011001000800000000
   Shop #: WSC 73430 031 00063
   ASAM Dataset: EV_DashBoardJCIMQBAB 009008
   ROD: EV_DashBoardJCIMQBAB_009_SK37.rod
   VCID: 2A5BB7AF4DFF20D47C-807E

1 Fault Found:
9456681 - Key 
          B104C 29 [008] - Implausible Signal
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Date: 2000.00.00
                    Time: 00:00:00


-------------------------------------------------------------------------------
Address 18: Aux. Heat (J364)       Labels:| 5Q0-963-272.clb
   Part No SW: 5Q0 963 272 G    HW: 5Q0 963 272 G
   Component: STH-MQB       008 0075  
   Coding: 9309
   Shop #: WSC 73430 031 00000
   ASAM Dataset: EV_AuxilParkiHeateWOS 002018
   ROD: EV_AuxilParkiHeateWOS.rod
   VCID: 3A7B87EFBD5F90540C-806E

   Auxiliary heating remote control: 
   Subsystem 1 - Part No SW: 3Q0 963 513     HW: 3Q0 963 513 
   Component: R64 D208L  004 0401 
   Serial number: 00000000000000292641

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 3Q0-907-530-V1.clb
   Part No SW: 3Q0 907 530 G    HW: 3Q0 907 530 C
   Component: GW MQB High   433 4303  
   Revision: --------    Serial number: 0006646059
   Coding: 030100345F087300EB00024A080F00010001070000000000000000000000
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_GatewNF 013023
   ROD: EV_GatewNF_VW37.rod
   VCID: 3365AACB9A35611CCF-8066

   Generator: 

   Multifunction steering wheel control module: 
   Subsystem 2 - Part No SW: 3V0 919 719 A    HW: 3V0 919 719 A
   Component: E221__MFL-PR6  H02 0160 
   Serial number: 000000000B0506110717

   Battery Monitoring Control Module: 
   Subsystem 3 - Part No SW: 5Q0 915 181 J    HW: 5Q0 915 181 J
   Component: J367-BDMConti  H03 1050 
   Serial number: 75886000001707270873

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q4 959 393 E    HW: 5Q4 959 393 B
   Component: TSG FS        011 0032  
   Serial number: 0000270994868 
   Coding: 001008208000040000001100
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_DCUDriveSideEWMAXCONT 006001
   ROD: EV_DCUDriveSideEWMAXCONT.rod
   VCID: 4581E413C4A1EFAC71-8010

   Rear Driver Side Door Control Module: 
   Subsystem 1 - Part No SW: 5Q0 959 811 E    HW: 5Q0 959 811 E  Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_DRV  005 0007 
   Serial number: 00000000000015630333
   Coding: 010200

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 5Q0 909 144 T    HW: 5Q0 909 144 R
   Component: EPS_MQB_ZFLS  129 1072  
   Coding: 0107
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_SteerAssisMQB 013144
   ROD: EV_SteerAssisMQB_013.rod
   VCID: 4581E413C4A1EFAC71-8010

No fault code found.

-------------------------------------------------------------------------------
Address 4B: Multifunc. Module
Interface not compatible.
Please upgrade to a current Ross-Tech interface.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q4 959 392 E    HW: 5Q4 959 392 B
   Component: TSG BFS       011 0032  
   Serial number: 0000270930323 
   Coding: 001000208C00040000001100
   Shop #: WSC 73430 790 12345
   ASAM Dataset: EV_DCUPasseSideEWMAXCONT 006001
   ROD: EV_DCUPasseSideEWMAXCONT.rod
   VCID: 4487F917CF9BD6A466-8010

   Rear Passenger Door Control Module: 
   Subsystem 1 - Part No SW: 5Q0 959 812 E    HW: 5Q0 959 812 E  Labels: 5QX-959-81X-V1.CLB
   Component: FOND_FHSG_PSG  005 0007 
   Serial number: 00000000000015657725
   Coding: 190200

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 3V0-035-MIB-STD2.clb
   Part No SW: 5Q0 035 842 C    HW: 5Q0 035 842 C
   Component: MU-S-D-ER     H41 0456  
   Serial number: SKZAZ2T5312168
   Coding: 03730200FF00000051111201008802232F0208C40120050002
   Shop #: WSC 73430 790 00063
   ASAM Dataset: EV_MUStd4CTSAT 001022
   ROD: EV_MUStd4CTSAT_VW26.rod
   VCID: 2F6DA6BB761D45FCAB-807A

   Display and control head 1 for information electronics: 
   Subsystem 1 - Part No SW: 5E0 919 605 N    HW: 5E0 919 605 N
   Component: ABT_Std-2  H50 8130 
   Serial number: SKZ6ZHT2240042      

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:| 5Q0-907-383.clb
   Part No SW: 5Q0 907 383 L    HW: 5Q0 907 383 L
   Component: Anhaenger     H27 0260  
   Revision: 8C001004    Serial number: 0450657251
   Coding: 0100000202000000
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_TrailFunctGener2Hella 001008
   ROD: EV_TrailFunctGener2Hella_VW26.rod
   VCID: 408FF507DB83CA8442-8014

2 Faults Found:
656650 - Bulb for Right Turn Signal on Trailer 
          C10F6 15 [009] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 225
                    Mileage: 192639 km
                    Date: 2021.06.16
                    Time: 11:36:44

656906 - Bulb for Left Turn Signal on Trailer 
          C10F7 15 [009] - Open or Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 225
                    Mileage: 192639 km
                    Date: 2021.06.16
                    Time: 11:36:44


-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (----)       Labels:| 7N0-959-107.clb
   Part No SW: 5E0 959 107 A    HW: 5E0 959 107 
   Component: HDSG-Modul    H01 0746  
   Revision: 42001001    Serial number: 202700575
   Coding: 1233074003
   Shop #: WSC 73430 790 00000
   ASAM Dataset: EV_HDSGSk462 301136
   ROD: EV_HDSGSk462.rod
   VCID: 2A5BB7AF4DFF20D47C-807E

2 Faults Found:
0019 - Hall Sensors in Motor 2 for Rear Lid 
          B120A 02 [008] - Signal Failure
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 3
                    Fault Frequency: 145
                    Reset counter: 218
                    Mileage: 194515 km
                    Date: 2021.08.03
                    Time: 15:24:38

                    Voltage terminal 30: 11.95 V

0128 - Closing Assistance Closed 
          B113E F1 [008] - Implausible Signal
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 86
                    Reset counter: 216
                    Mileage: 194515 km
                    Date: 2021.08.03
                    Time: 20:58:09

                    Voltage terminal 30: 13.98 V


-------------------------------------------------------------------------------
Address 75: Telematics (J949)       Labels:| 5QE-035-285.clb
   Part No SW: 5NA 035 284 B    HW: 5NA 035 284 B
   Component: OCULowMQBLGE  H17 0717  
   Revision: --------    
   Coding: 03730201EA163A0D3B1CBE000045400382E608
   Shop #: WSC 73430 790 00063
   ASAM Dataset: EV_OCULowMQBLGE 004044
   ROD: EV_OCULowMQBLGE_004_VW25.rod
   VCID: 3C7781F7B76BAE641E-8068

No fault code found.

End-------------------------(Elapsed Time: 04:35)--------------------------

 

You have the right readings. DPF will come on if soot levels reach 9g. It's then time to do a forced regen.

 

BTW - keyfob 2 needs a new battery and you potentially need an up to date version of VCDS (is this software genuine?)

36 minutes ago, varaderoguy said:

You have the right readings. DPF will come on if soot levels reach 9g. It's then time to do a forced regen.

 

BTW - keyfob 2 needs a new battery and you potentially need an up to date version of VCDS (is this software genuine?)

 

Oh thank you. 

First of all, how you know this battery? Because when i bought the car i change batteries on key fob and it’s before 2-3 months. 

 

Other one is DPF question. 

I read something about this “dpf regeneration with vcds” and much of people say it’s badly for the car, what is real? I using DPF liquids from ProTec to help DPF regeneration. Some of topic says DPF is fully on 70-80-90 grams, and i have now 5.15g 7.20g true?.

Ref: battery. It's says so in your VCDS scan you sent over. On the key fob click open key and get your finger in the side where the key lives and open up the blank panel. Battery lives there CR2025 Panasonic battery reqd. Also clear VCDS log too pls.

 

Ideally, you need to go on a long fast run and let the car clear itself. If that's not working then you have to do a forced regen. It's not recommended to do the forced regen too often only when needed. Let the car determine and manage the soot levels itself is the usual rule. Try better branded fuels with higher Cetane levels (super Diesel) in them also helps or use a Cetane improver.

6 hours ago, varaderoguy said:

Ref: battery. It's says so in your VCDS scan you sent over. On the key fob click open key and get your finger in the side where the key lives and open up the blank panel. Battery lives there CR2025 Panasonic battery reqd. Also clear VCDS log too pls.

 

Ideally, you need to go on a long fast run and let the car clear itself. If that's not working then you have to do a forced regen. It's not recommended to do the forced regen too often only when needed. Let the car determine and manage the soot levels itself is the usual rule. Try better branded fuels with higher Cetane levels (super Diesel) in them also helps or use a Cetane improver.

 

Battery: About clearing log history. I never got clear log because idk how’s it doing, i hope this know help to customer, read something about a car problems in the past. 

 

DPF: Yea i fill all 5/10 time just OMV Max motion Diesel:), and using DPF cleaner from ProTec every half year, CR system cleaner every 2 months. I know it’s maybe so much, i just saw this somewhere and doing that from other peoples skills and opinions. 

Then just observe the value of this 2 datas. 

Okey thanks so much for the info.

 

(i know my english quality so sorry)

 

When I have checked this information in Vcds, soot mass measured usually reaches about 24g before the car will carry out an "Active" regeneration (when it smells of burning and the fan is on and idle speed increases to 1000rpm). I see and expect this once per tank of fuel (about 550miles) in my 2.0 TDI. But can differ on how the car is being used. 

 

You could also check in the advanced measuring blocks menu

 

"oil ash volume" 

"Oil ash mass" 

 

The " mass" is the unburned material that gradually clogs the dfp (don't worry though,  as this happens over a long time and miles or Km). Its limit is 80g. My car has 76k miles and is at 26g so a long way from needing the dfp replaced. 

 

 

 

 

1 hour ago, paulski said:

When I have checked this information in Vcds, soot mass measured usually reaches about 24g before the car will carry out an "Active" regeneration (when it smells of burning and the fan is on and idle speed increases to 1000rpm). I see and expect this once per tank of fuel (about 550miles) in my 2.0 TDI. But can differ on how the car is being used. 

 

You could also check in the advanced measuring blocks menu

 

"oil ash volume" 

"Oil ash mass" 

 

The " mass" is the unburned material that gradually clogs the dfp (don't worry though,  as this happens over a long time and miles or Km). Its limit is 80g. My car has 76k miles and is at 26g so a long way from needing the dfp replaced. 

 

 

 

 

Thank you so much for sharing this information!  

10 hours ago, varaderoguy said:

You have the right readings. DPF will come on if soot levels reach 9g. It's then time to do a forced regen.

 

 

Are you sure about that? The value seems far too low.

 

When the light comes on it is to advise the driver to do an active and not forced regen, a forced regen is required if the driver has ignored the warning light, carried on driving short journeys and the soot level subsequently reaches the next threshold which puts the car into limp mode and brings up the engine wrning light as well.

1 hour ago, paulski said:

When I have checked this information in Vcds, soot mass measured usually reaches about 24g before the car will carry out an "Active" regeneration (when it smells of burning and the fan is on and idle speed increases to 1000rpm). I see and expect this once per tank of fuel (about 550miles) in my 2.0 TDI. But can differ on how the car is being used. 

 

You could also check in the advanced measuring blocks menu

 

"oil ash volume" 

"Oil ash mass" 

 

The " mass" is the unburned material that gradually clogs the dfp (don't worry though,  as this happens over a long time and miles or Km). Its limit is 80g. My car has 76k miles and is at 26g so a long way from needing the dfp replaced.

Thank you from me as well, I had been asking for these values on another thread. Now I ust find the time to hook up VCDS.

1 hour ago, J.R. said:

Thank you from me as well, I had been asking for these values on another thread. Now I ust find the time to hook up VCDS.

Yeah that’s helpful for us.

2 hours ago, J.R. said:

Are you sure about that? The value seems far too low.

I think I miswrote. If the car reaches 9g of soot, then the car will do a (light) regen. If it reaches 15g then it will do a full regen. If the car doesn't get a chance to do the full hard regen, then DFP light on. If a regen is still not performed then it is time for a Manual regen using VCDS. Hope that clears that point up. Apologies for confusion.

No problems, the values that I had were from an article written by a VAG engineer that explained the whole process very well and I believe that they were much higher, however I am working from memory as the printed and laminated article is in France and I am in the UK.

 

Your figure of 15g may be correct but your use of light, full and full hard regen is very confusing, I dont think a "Light Regen" exists in that at 9g the vehicle ECU commands an operation however Passive Regens occur at any time the driving conditions are correct, high speed/high load etc.

 

At whatever the threshold is be it 15g or 25g an Active Regen is commanded, it is not a Full or Hard Regen, it is the one and only Regen that the vehicle does automatically.

 

Beyond that if the driver has ignored the warnings and the vehicle goes into limp mode having hit the higher threshold there is a Forced Regen which has to be done by a dealer or garage/individual equipped with VCDS or similar.

 

Plese feel free to correct me as I am still learning and there is a lot of inconsistent and incorrect stuff written on the subject, I still do not know for sure if the regen is triggered by the measured value (from DPF diff pressure sensor) or calculated values, my car appears to be the latter.

Edited 24 October, 20214 yr by J.R.

I've done 25k miles in my car since owning it, (2016 so no adblue) and I have never ever had it not  activate an active regen at least once per tank full no matter how I drive it. 

 

I've checked my values before and after active regen cycles more than a few times to understand how it behaves. 

 

24g it will start one for sure. I've seen measured and calculated values gradually increasing before and I don't believe there is any passive activity occuring before that point. 

After, it drops to around 5g soot mass calculated. 

 

With my normal driving at around 250 miles soot mass reaches around 21g. Hence I roughly get a regen per tank with my driving at about 300 miles each time between active cycles. 

 

there is a useful advanced measuring block called "distance since last regeneration", it's in meters so just needs a quick conversion to miles. 

 

Personally I cannot see with normal driving conditions,  even hard on the motorway,  how you would ever achieve a temperature high enough to burn off soot and get "passive" regeneration of the dpf. 

 

Active regen pushes the exhaust temperatures to 500c. Even ragging the hell out of a car is unlikely to get anywhere near that temperature. 

 

I am an advocate of regular oil changes ( none of that "extended interval" rubbish with advanced oils) and don't interrupt any active regen cycles (or little as possible) and it should go on for many miles. 

Edited 24 October, 20214 yr by paulski
Added car year

4 hours ago, J.R. said:

Your figure of 15g may be correct but your use of light, full and full hard regen is very confusing, I dont think a "Light Regen" exists in that at 9g the vehicle ECU commands an operation however Passive Regens occur at any time the driving conditions are correct, high speed/high load etc.

In all fairness it also depends on the version of MK3 Octavia too. My 2019 Scout 184tdi has different versions of regen - a light regen which runs every thankful and a heavy or full regrn that tends to run every 4th or 5th tank. It depends on whether you have an adblue fitted car or not. My 2016 Scout had a different regen process tending to do a full on regen every tankful. 

Understood, thanks for the clarification Vaderoguy.

 

Paulski, I often look at the distance since last regen and its nevr very much, I'm too much of a disorganised muppet to subtract the figure from the odometer reading, write down the resultant figure as when the regen occurred, not lose the bit of paper so I can compare it next time I hear/feel a regen or remember to do another scan at a set mileage.

 

I have too many other conflicting priorities, knowing myself well if I did do it and write it down I would only end up beating on myself for having lost it, or truth be told not being able to find it or remember where it was written.

 

Does anyone know how much excess fuel is burned during a regen?

58 minutes ago, paulski said:

 

24g it will start one for sure. I've seen measured and calculated values gradually increasing before and I don't believe there is any passive activity occuring before that point. 

After, it drops to around 5g soot mass calculated. 

I too have come to that conclusion when I was keeping an eye on the figures. Even when I do believe there was passive regen activity the figures still rose in a linear fashion.

58 minutes ago, paulski said:

Personally I cannot see with normal driving conditions,  even hard on the motorway,  how you would ever achieve a temperature high enough to burn off soot and get "passive" regeneration of the dpf. 

 

Active regen pushes the exhaust temperatures to 500c. Even ragging the hell out of a car is unlikely to get anywhere near that temperature. 

 

I did once leave the laptop connected and have a passenger keep an eye on the values, the EGR temp rises very quickly when overtaking on full throttle, we did see 700°c but I agree regarding motorway cruising at the legal limit.

 

I have done a lot of miles towing very large very overloaded van trailers, most inclines were full throttle and dropping one or two gears, three on A roads, I could not see the EGR temp but the oil temperature rose very quickly and significantly, these were 200 mile journeys an EGR had happened before leaving and I do believe that passive regen was happening on the journey, the very next day the car regenned again

 

I think that the regen is triggered by the calculated soot load which does not take into account passive regens, however the active regen will be shorter if there is not as much soot to burn thanks to passive regeneration. I reckon the DPF differential pressure sensor input and the subsequent "Measured soot" value is not used for the regen trigger point it works using the calculated, if the measured is higher than the calculated for whatever reason then it will trigger a regen once it exceeds the threshold, the regen ends when the pressure sensor indicates that enough soot has been burned.

 

The above is only my hypothesis based on observation, when I get back to France I can find the article which gives temperatures and soot laod trigger points, the latter only being relevant to the vehicle DPF system under consideration but the temperatures for active and passive regen will be relevant.

 

Edited 24 October, 20214 yr by J.R.

I managed to have a VCDS session until the laptop battery decided to give up, it did so before I could save the measuring block data but luckily I wrote it all down.

 

Since last regen 250455 seconds, 322185 alleged kms which is in fact metres, 17.45 litres of fuel consumed since, all correlate to each other once you correct the spurious units that they use. So IO have done 320km = 250 miles since the last regen which is OK, where my 90 miles came from might have been because I unknowingly interrupted a regen and the next journeys were not long enough for the conditions to be right.

 

Some other interesting data, Field Regen Limit is 22.89g my calculated soot load is 18.15 indicating the next regen in 65 kms, however my measured soot load (remember my EGR is disabled) is only 4.67, this suggests that the engine only really needs to regen every 1500 kms with its present regime.

 

At tickover the pressure drop across the EGR is actually negative at -6 HPa and at the 2500 rpm rev limit it rises to a positive 40 HPa, do these figures seem reasonable for a vehicle with 100000 miles?

 

And as if the VCDS units are not confusing enough already they use a volume for the Oil Ash Volume, mine shows as 0.1 litres, I have no idea what this corresponds to as a mass or what the max limit is.

 

What I would like to know is how many miles my DPF has left in it but without a oil ash mass figure I just dont know, I currently have by their reckoning 0.1 litres of oil ash although going by the measured vs calculated soot volumes I bet it is in fact a lot less, the pressure drop across the DPF is -6 HPa at tickover and + 40HPa at 2.5k rpm with the DPF having 4.67g of soot measured or 18.15 calculated.

 

Based on the above can anyone estimate the remaining life or point me in the direction of where I can find either how to convert oil ash volume to mass or the maximum volume before its unserviceable?

 

Any comments on the above values will be welcomed!

DPF's do have limitations on their use before the regen process ceases to work properly. Vans and Cars that do short stop/start journeys tend to need their DPF's cleaned around 100-150k miles (as the soot mass tends to congeal and a lot of folk don't use Cetane improvers/decent fuel to improve the burn cycle).

 

@J.R.the biggest issue will be that the car cannot be expected to behave on a standard decade graph basis. We don't know how the EGR delete will effect the DPF burn cycle. Anyway the modern way of dealing with a blocked DPF is a jet wash (you can do it yourself or get a company to do it for you). They don't generally expire. They will probably need replacing after the second DPF clean, but mainly due to external corrosion.

Thanks.

 

I don't know for sure but from my study and understanding of the EGR process I believe that my vehicle will be producing less soot to be burnt off in the DPF albeit at the price of higher NOx emissions, the calculated and measured DPF soot levels bear this out and have always had such a difference since it was fitted, before there was a slight difference which was due to passive regens which are not taken into account by the ECU software.

 

I am irked that fuel is wasted doing regens before they are really needed but perhaps the duration is shorter, I will be really pi55ed if the thing shuts down before it is actually clogged up because the algorithm says that it must be.

Thank you guys.