Exhaust/dpf sensor bolt sizes?

[RobJH]

Hi, hoping someone might be able to point me in the right direction. I'm at a stage where I need to remove the DPF and give it a good clean to reduce the soot level.
I've managed to undo the probe sensor but the next two a spanner will not do and could do with the right size/tool to loosen them. (both different sizes just to be awkward)the
Does anyone know the correct size tools for the job?

The other option is to leave in situ and clean away but not sure if that would cause more of an issue. The plan is to jet wash it after flushing with a detergent.

Pic attached of the offending sensors circled in red

Any help appreciated

 

[Niknak]

Normally they are 21 mm and I use a lambda sensor socket, they are FT normally

 

[Niknak]

What are your soot levels and why are you attempting to wash it out ?

 

[RobJH]

Soot mass just reached 50g had been wanting to do a driving regen but VCDS wouldn't accept the security code it provided. I'm stuck in limp mode with the eml illuminated and the coil light flashing.

Trying to wash it out to cure the issue but thinking if VCDS won't accept the security code i'm not going to be able to reset the levels on it.

 

[mmi]

VCDS wouldn't accept the security code it provided

A bit curious about VCDS part. Any chance to share VCDS Auto-Scan please?

Also interested in engine blockmap data.
VCDS -> Applications -> Controller Channel Map ->

Tick/fill boxes as above and hit Go.
VCDS flashes screens for a moment (when finished hit "Done, Go Back") and there will be file blockmap-01-... in folder C:\Ross-Tech\VCDS\Logs\....

 

[RobJH]

I'll pop out shortly and run another autoscan and the engine blockmap.

 

[RobJH]

I'm having no joy getting the blockmap, it flashed up the engine screen but it doesn't save anything to the log. I'm not sure if this is because I've only got the old style cable and the van is too new.

Autoscan as follows:

Sunday,02,May,2021,08:26:40:40807
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 21.3.0.0 (x64)
Data version: 20210226 DS325.0
www.Ross-Tech.com


VIN: WV1ZZZ7   License Plate:


Chassis Type: 7H-VN75 (7E0)
Scan: 01 03 04 08 09 0D 10 13 15 17 19 25 5F 61 78

VIN: WV1ZZZ7   Mileage: 69830km-43390miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
0D-Slide Door, Left -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
78-Slide Door, Right -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (2D2D2-CXHA)       Labels:. 04L-907-309-V2.clb
   Part No SW: 04L 906 056 KL    HW: 04L 907 445
   Component: R4 2.0l TDI   H02 3802 
   Revision: 23002001   
   Coding: 00194014432401090000
   Shop #: WSC 02762 790 50316
   ASAM Dataset: EV_ECM20TDI03004L906056KL 004003
   ROD: EV_ECM20TDI03004L906056KA.rod
   VCID: 0103EC1290966D83CC-8054

1 Fault Found:
23902 - Diesel Particle Filter
          P2463 00 [175] - Excessive Soot Accumulation
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 69767 km
                    Date: 2035.01.30
                    Time: 13:52:04

                    Engine RPM: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 54 °C
                    Intake air temperature: 26 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 11.820 V
                    Unlearning counter according OBD: 40
                    Counter for regeneration time of particulate filter: 1304 s
                    Particle filter: kilometers since last regeneration: 592.1
                    Particle filter: soot mass measured: 7.58 g
                    Particle filter: soot mass calculated: 44.27 g
                    Particl.filt.: differential pressur.sensor 1 bank 1: dyn.offset: 0.6 mbar
                    Particle filter: field regeneration lock status: 8

Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 7E0-907-37x-MK100ESC.clb
   Part No SW: 7E0 907 379 P    HW: 7E0 907 379 M
   Component: ESC           H06 0133 
   Revision: 00000000    Serial number: 60258000000283
   Coding: 307E4098656484840C7E027FA68B21D379F100
   Shop #: WSC 02762 790 50316
   ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
   ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
   VCID: 3F872AEAA6E2DB73FA-806A

No fault code found.

-------------------------------------------------------------------------------
Address 04: Steering Angle (G085)       Labels:* 6R0-959-654.clb
   Part No SW: 6R0 959 654     HW: 6R0 959 654
   Component: LENKW.SENSOR  H07 0070 
   Serial number: 23011813470843
   Coding: 01
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_LWSKLOVW25X 005001
   ROD: EV_LWSKLOVW25X.rod
   VCID: 7EF997EEE168127BB1-802A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 7E5-907-047.clb
   Part No SW: 7E0 907 047 AJ    HW: 7E0 907 047 AJ
   Component: Climatic-T5   H22 0708 
   Revision: 00001002   
   Coding: 0000000003
   Shop #: WSC 02762 790 50316
   ASAM Dataset: EV_ClimaticT5 A01003
   ROD: EV_ClimaT5Basis.rod
   VCID: 72E1B3DEA530461BC5-8026

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7E0-937-BCM-V1.clb
   Part No SW: 7E0 937 090 C    HW: 7E0 937 090 C
   Component: BCM PQ25 Max4 H82 0752 
   Revision: B9082001    Serial number: 4000 030180272
   Coding: B8FE793A0A63341393288F747EEB8EF40F84710F60CC6DE0330403230840
   Shop #: WSC 02762 534 1418863
   VCID: 2B5F6EBA4A9A57D346-807E

   Subsystem 1 - Part No: 5K7 955 559 C  Labels: 5K7-955-559.CLB
   Component: RLS 310118 04  47  0106
   Coding: 0228EE

   Subsystem 2 - Part No SW: 7E0 959 801 P    HW: 7E0 959 801 P
   Component: J386__TSG_FT  004 0653
   Serial number: KU0KU024011880240556
   Coding: 1400B0

   Subsystem 3 - Part No SW: 7E0 959 802 P    HW: 7E0 959 802 P
   Component: J387__TSG_BT  004 0653
   Serial number: KU0KU025011880250471
   Coding: 0400A0

   Subsystem 4 - Part No: 7E1 951 172
   Component: DWA-Sensor 00  001 0104
   Coding: 000000

   Subsystem 5 - Part No: 1K0 951 605 F
   Component: LIN BACKUP HO  H01 0008
   Coding: 000000

   Subsystem 6 - Part No: 7E1 951 172
   Component: DWA-Sensor 00  001 0104
   Coding: 000000

   Subsystem 7 - Part No SW: 7E0 959 442     HW: 7E0 959 442   Labels: 3C8-959-537.CLB
   Component: E221__MFL-DC1  H02 0103
   Serial number: 39170003029640108025
   Coding: B0FFFF

2 Faults Found:
03303 - Response Closing Status of Rear Left Door
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 45
                    Mileage: 68094 km
                    Time Indication: 0
                    Date: 2021.04.13
                    Time: 08:30:26

03304 - Response Closing Status of Rear Right Door
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 3
                    Reset counter: 78
                    Mileage: 69075 km
                    Time Indication: 0
                    Date: 2021.04.20
                    Time: 06:41:40


-------------------------------------------------------------------------------
Address 0D: Slide Door, Left        Labels: Redir Fail!
   Part No: 7E0 959 243 D
   Component: Schiebetuer-SG  407 0328 
   Shop #: WSC 02762 790 00000
   VCID: 306579D6A3BC340B73-8064

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 7E0-919-475.clb
   Part No SW: 7E0 919 475 T    HW: 1Q0 919 475
   Component: PARKHILFE 4K  H03 0212 
   Revision: --------    Serial number: 32961735402801
   Coding: 108008
   Shop #: WSC 02762 790 50316
   ASAM Dataset: EV_VW75XParkAssis4K 001013
   ROD: EV_VW75XParkAssis4K_001.rod
   VCID: 438F261ACA0ABF939E-8016

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels:| 7N0-907-572.clb
   Part No SW: 7N0 907 572 C    HW: 7E0 907 572
   Component: ACC Bosch PQx H03 0211 
   Serial number: 1601180442B2B7
   Coding: 00004000FE0779
   Shop #: WSC 01383 790 50316
   ASAM Dataset: EV_ACCBEGVW361 001006
   ROD: EV_ACCBEGVW361.rod
   VCID: 36694FCE89D81A3B29-8062

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 J    HW: 7E0 959 655 J
   Component: VW10Airbag021 010 0018 
   Revision: --------    Serial number: 003EK00081WZ
   Coding: 000000000000000000000000000000003231
   Shop #: WSC 02164 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
   ROD: EV_AirbaVW10BPAVN750_VN75.rod
   VCID: 3D7B50E2ACEEC963E8-8068

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 7E0 920 970 S    HW: 7E0 920 970 S
   Component: KOMBI         H03 1107 
   Serial number: 00000000000000
   Coding: 440B010300
   Shop #: WSC 02762 790 50316
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A05733
   ROD: EV_Kombi_UDS_VDD_RM09_005_VW25.rod
   VCID: 3A715BFEBDC0FE5BCD-806E

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7E0-909-901.clb
   Part No SW: 7E0 909 901     HW: 7E0 937 090 C
   Component: GW-K-CAN TP20 H82 0752 
   Revision: B9082001   
   Coding: 042307
   Shop #: WSC 02762 534 1418863
   VCID: 68D5D1B69BECBCCB6B-803C

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H03 1107 
   Serial number:              
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03710
   ROD: EV_Immo_UDS_VDD_RM09_VW21.rod
   VCID: 6AD1ABBE8DE08EDB7D-803E

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD2.clb
   Part No SW: 5C0 035 680 G    HW: 5C0 035 680 G
   Component: MU-S-ND-ER    H41 0468 
   Serial number: VWZAZ2U0583997
   Coding: 065700013C00000011111101008808001F0100C6002001004F
   Shop #: WSC 02762 790 50316
   ASAM Dataset: EV_MUStd4CTSAT 001022
   ROD: EV_MUStd4CTSAT_VN35.rod
   VCID: 254B9882247E61A390-8070

   Data carrier:
   Subsystem 1 - Part No SW: 3G0 919 866 BJ    HW: -----------
   Component: ECE1 2018  --- 0915
   Serial number: --------------------

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 7E0 907 534     HW: 7E0 937 090 C
   Component: Batt.regelung H82 0752 
   Serial number: 4000 030180272
   Coding: 030B1A73
   Shop #: WSC 02762 790 00000
   VCID: 68D5D1B69BECBCCB6B-803C

   Subsystem 1 - Part No SW: 7E0 915 181 K    HW: 7E0 915 181 K
   Component: J367-BDMConti  H03 1050
   Serial number: 75885700001801310181

No fault code found.

-------------------------------------------------------------------------------
Address 78: Slide Door, Right        Labels: Redir Fail!
   Part No: 7E0 959 243 D
   Component: Schiebetuer-SG  407 0328 
   Shop #: WSC 00000 000 00000
   VCID: 306579D6A3BC340B73-8064

No fault code found.

End-------------------------(Elapsed Time: 03:26)--------------------------

 

[Niknak]

More than likely

 

[mmi]

I'm having no joy getting the blockmap, it flashed up the engine screen but it doesn't save anything to the log. I'm not sure if this is because I've only got the old style cable and the van is too new.

True - the old cable doesn't communicate properly with these EU6 engines. It's been verified that e,g. codings do not work. I'm afraid also the other changes are limited/restricted.
More here --> T6 oem MFSW retrofit. Unable to access Engine 01 to activate

However, I believe you still could extract some data one by one. E.g. the following would be of interest.
From thread https://www.t6forum.com/threads/t6-and-dpf-yes-that-old-chestnut.26873/

 

[RobJH]

I will take a read and see what I can do. Thanks

 

[RobJH]

Took a screen shot, hopefully it helps.

 

[RobJH]

The last two that I somehow missed:
Ash load limit 110g
Coordinates release for DPF - Condition met

 

[mmi]

Have you looked into adaptations? There are a few which probably are related.

Curious what you have got in channel IDE01711-Blocking of particle filter regeneration?

IDE01096-Particulate Filter Statistics	0
IDE01711-Blocking of particle filter regeneration	not active
IDE04617-Protective function	Enabled
IDE07903-Adaptation of ash mass	8.01 g

 

[RobJH]

Particulate filter blocking not active. Everything else as above bar ash mass @ 18.35g

 

[RobJH]

It turns out the two sensors were 22mm and 24mm. It had to have a forced regen whilst being driven and values reset to sort it.

A bit of a costly day with that and then upgrading to a hex v2 interface so I can sort it myself if I ever need to in future.

Appreciate everyone's input.

 

[Niknak]

Did you check the sensor feed pipes have to watch these as the block up too giving high soot readings

 

[RobJH]

Did you check the sensor feed pipes have to watch these as the block up too giving high soot readings

They were clear. I think it was all down to the previous owner doing short journeys and not having enough fuel to ever let it regen. VCDS came back with something like 700+km since last regen.

 

[xop32]

when you flush the dpfs do you end up cleaning all three boxs on the exhaust system, main dpf at front of course and the 2 smaller ones behind it

out of interest what chemicals did you use to flush, and did the cleaning bring down the soot values??

 

[RobJH]

I only flushed the dpf itself and sprayed it liberally with traffic film remover. It sat for some time and then it got rinsed with a commercial pressure washer.

It made no difference to the values.
You can buy a proper dpf cleaner that you leave to soak in the dpf.

If I'd have had the latest version of VCDS I'd have been able to force regen it. As it was it ended up at dpf doctor and they rectified it.

 

[RobJH]

(Test)