MIL ON

[Led Sandwich]

So driving home last night my MIL came on after about an hour and a half. I have done a full scan and thought id ask to see if anyone had any advice. it seems to be Reductant system related and my ad blue is on 1500 miles, could low ad blue exacerbate these issues? I have also read there was a vw recall on the P20EE code does that mean its worth runnign a manual regen and clearing the codes?

The Three Main Codes Were as below. Do they all look related?

33262 - Reductant System Performance Bank 1
P204F 00 [01100100] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear

31391 - Manifold / Barometric Pressure Sensor (G71) / (F96)
P0105 00 [00100000] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear

31103 - SCR NOx Catalyst Bank 1
P20EE 00 [11101100] - Efficiency too Low
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear

Any advice would be really appreciated


Full Scan Below
Sunday,11,May,2025,11:11:42:41814
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 25.3.1.1 (x64) HEX-V2 CB: 0.4671.4
Data version: 20250415 DS365.0
www.Ross-Tech.com


VIN: WV1ZZZ7HZJH046841 License Plate: DG67



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


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

VIN: WV1ZZZ7HZJH046841

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- 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
-------------------------------------------------------------------------------
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 02739 790 50316
ASAM Dataset: EV_ECM20TDI03004L906056KL 004003
ROD: EV_ECM20TDI03004L906056KA.rod
VCID: 015F89C7E1833F62804-8054
VINID: 9E606AAAA1D8A9A6001062040434D5ABEB

3 Faults Found:
31391 - Manifold / Barometric Pressure Sensor (G71) / (F96)
P0105 00 [00100000] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear

33262 - Reductant System Performance Bank 1
P204F 00 [01100100] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 120994 km
Date: 2087.01.20
Time: 23:13:47

Engine speed: 1495.50 /min
Normed load value: 73.3 %
Vehicle speed: 73 km/h
Coolant temperature: 91 °C
Intake air temperature: 13 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 13.289 V
Unlearning counter according OBD: 40
Simulated particle filter surface temperature: 303.5 °C
Reducing agent fill level sensor: act. value: 52 mm
Sensor for reducing agent tank temperature: temperature: 26.5 °C
Calculated NOx concentration behind turbocharger: 0 ppm
NOx sens.dwnstrm.SCR cat conv: NOx conc.: 177 ppm
Reducing agent quality sensor: urea concentration: 0.00 %

31103 - SCR NOx Catalyst Bank 1
P20EE 00 [11101100] - Efficiency too Low
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 3
Mileage: 120686 km
Date: 2087.01.20
Time: 13:52:02

Engine speed: 2169.50 /min
Normed load value: 71.0 %
Vehicle speed: 106 km/h
Coolant temperature: 91 °C
Intake air temperature: 25 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 13.304 V
Unlearning counter according OBD: 40
Air mass at air mass meter 1: 100.8 kg/h
Outside temperature sensor 1: B1: raw value: 22.5 °C
Mass airflow sensor 1 bank 1 airflow: raw value: 388.3 mg/stroke
Throttl.valve adapt. 1 bank 1: posit feedback - Actual value: 69.93 %
NOx sensor before SCR cat conv: offset correction factor: 0 ppm
NOx sensor after SCR cat conv: offset correction factor: 120 ppm
Reducing agent quality sensor: urea concentration: 0.00 %
Reducing agent quality sensor: raw temperature value: 0.0 °C

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: 62327000000592
Coding: 307E4098656684840C7D027AA68321D379F100
Shop #: WSC 02739 790 50316
ASAM Dataset: EV_Brake1ESCCONTIVN75XGP2 011001
ROD: EV_Brake1ESCCONTIVN75XGP2_011.rod
VCID: 3FDB4F3FD7F78992B60-806A

1 Fault Found:
0397 - TPMS Warning
C102D F0 [00001000] - Pressure Loss
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 3
Fault Frequency: 4
Reset counter: 9
Mileage: 117594 km
Date: 2084.14.11
Time: 16:05:16


-------------------------------------------------------------------------------
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: 17081713470972
Coding: 01
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_LWSKLOVW25X 005001
ROD: EV_LWSKLOVW25X.rod
VCID: 7EA5F23B907D409AFD6-802A

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 02739 790 50316
ASAM Dataset: EV_ClimaticT5 A01003
ROD: EV_ClimaT5Basis_VN75.rod
VCID: 72BDD60BD42514FA89E-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 230171725
Coding: A0FC793A0A61341393284F646CEB8EF40D84718960CC6D603304003F0840
Shop #: WSC 02739 534 268957
VCID: 2B030B6F330F05320A8-807E

Subsystem 1 - Part No: 5K7 955 559 C Labels: 5K7-955-559.CLB
Component: RLS 210817 04 42 0106
Coding: 0228EE

Subsystem 2 - Part No SW: 7E0 959 801 R HW: 7E0 959 801 R Labels: 7E0-959-80X-V2.CLB
Component: J386__TSG_FT 004 0653
Serial number: KU0KU014081772261324
Coding: 1400B1

Subsystem 3 - Part No SW: 7E0 959 802 Q HW: 7E0 959 802 Q Labels: 7E0-959-80X-V2.CLB
Component: J387__TSG_BT 003 0653
Serial number: KU0KU014081772262868
Coding: 0400A1

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: 39170002155740127321
Coding: B0FFFF

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446) Labels:| 7E0-919-475.clb
Part No SW: 7E0 919 475 AA HW: 7N0 919 475
Component: PARKHILFE 8K H06 0212
Revision: -------- Serial number: 28231716104225
Coding: 10800C
Shop #: WSC 02739 790 50316
ASAM Dataset: EV_VW75XParkAssis8K 001012
ROD: EV_VW75XParkAssis8K_001_VN75.rod
VCID: 71BFD907D1232FE2704-8024

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: 1108170453A0FF Dataset Number: 7E0114v____ 0009
Coding: 00004000FE0779
Shop #: WSC 01383 790 50316
ASAM Dataset: EV_ACCBEGVW361 001006
ROD: EV_ACCBEGVW361.rod
VCID: 36352A1BF8CD48DA656-8062

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:| 5K0-959-655.clb
Part No SW: 7E0 959 655 G HW: 7E0 959 655 G
Component: VW10Airbag021 H08 0018
Revision: -------- Serial number: 003V3005XP7L Dataset Number: 7E0003V____ 0905
Coding: 000000000000000000000000000000003231
Shop #: WSC 02734 790 50316
ASAM Dataset: EV_AirbaVW10BPAVW12X 001028
ROD: EV_AirbaVW10BPAVN750.rod
VCID: 3A2D3E2BCCD5ACBA81E-806E

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments
Cannot be reached

-------------------------------------------------------------------------------
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: 042305
Shop #: WSC 02739 534 268957
VCID: 6889B463E279EE2A27A-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_VW32.rod
VCID: 6A8DCE6BFCF5DC3A31E-803E

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794) Labels:| 5G0-035-MIB-STD2.clb
Part No SW: 5K7 035 200 K HW: 5K7 035 200 K
Component: MU-S-D-ER H41 0478
Serial number: VWZAZ2T5340599 Dataset Number: V03935266VJ 0001
Coding: 065700003C00000011111101008808001F0100C60020010003
Shop #: WSC 02739 790 50316
ASAM Dataset: EV_MUStd4CTSAT 001022
ROD: EV_MUStd4CTSAT_VW32.rod
VCID: 2C0108733681020A032-8078

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 230171725
Coding: 030B7A73
Shop #: WSC 02739 790 00000
VCID: 6889B463E279EE2A27A-803C

Subsystem 1 - Part No SW: 7E0 915 181 K HW: 7E0 915 181 K
Component: J367-BDMConti H03 1050
Serial number: 75885700001708150D1A

No fault code found.

End----------(Elapsed Time: 01:48, VBatt start/end: 11.7V/12.0V)-----------
------------------------------4 Faults Found-------------------------------

 

[mmi]

Full Scan Below

Full? Normally the scan reports also current mileage to help understand if the faults are ancient or recent ones.
Meanwhile

Post in thread 'P20EE00 Fault'

10 Sep 2023

I have also had the 600mile ad blue warning that decided to correct itself after 30miles, this has only happened once though in the last 1000 miles.

P204F00 - Reductant System Performance Bank 1
Intermittent

I believe the two above are related.

Software number: 04L906056KL
Software version: 3802

There is a newer engine software available - which should cure (false alarms) of P204F00 and P20EE00.

Welcome to VAG-Flashinfo!

VAG Flashfiles Informations - Version check of VAG ECUs - Update check for Audi, Seat, Skoda and Volkswagen

vag-flashinfo.de

---

A comparison of ECU software before/after update...

• mmi

• 

Post in thread 'Repetetive engine management fault, eml comes on during most medium length journeys.'

7 Sep 2022

I would update engine's software.

Current:

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

Updated version:

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 6166

E.g. >here<

The results should be similar to these -...

• mmi

• 

could low ad blue exacerbate these issues?

No.

I have also read there was a vw recall on the P20EE code does that mean its worth runnign a manual regen and clearing the codes?

I'm afraid that clearing the codes means that the conditions of the recall are void.

 

[Sackmycook]

Firstly, as above, check your software is up-to-date 6166

 

[Led Sandwich]

Full? Normally the scan reports also current mileage to help understand if the faults are ancient or recent ones.
Meanwhile

Post in thread 'P20EE00 Fault'

10 Sep 2023

I have also had the 600mile ad blue warning that decided to correct itself after 30miles, this has only happened once though in the last 1000 miles.

P204F00 - Reductant System Performance Bank 1
Intermittent

I believe the two above are related.

Software number: 04L906056KL
Software version: 3802

There is a newer engine software available - which should cure (false alarms) of P204F00 and P20EE00.

Welcome to VAG-Flashinfo!

VAG Flashfiles Informations - Version check of VAG ECUs - Update check for Audi, Seat, Skoda and Volkswagen

vag-flashinfo.de

---

A comparison of ECU software before/after update...

• mmi

• 

Post in thread 'Repetetive engine management fault, eml comes on during most medium length journeys.'

7 Sep 2022

I would update engine's software.

Current:

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

Updated version:

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 6166

E.g. >here<

The results should be similar to these -...

• mmi

• 

No.

I'm afraid that clearing the codes means that the conditions of the recall are void.

thanks for the help, mileage is 75,230 i’ll have another look, maybe i didn’t copy all of the scan. is the recall void even if the fault reoccurs as in if the fault code is present when i go in?

 

[Led Sandwich]

Firstly, as above, check your software is up-to-date 6166

sorry if this sounds stupid, how do i check the version?

 

[Sackmycook]

Your scan....

Address 01
Component 3802

Component should be 6166 now.....

VW now apparently charge for the upgrade but you might be able to blag it

 

[mmi]

Part No SW: 04L 906 056 KL HW: 04L 907 445
Component: R4 2.0l TDI H02 3802

Your current software is 04L 906 056 KL version 3802

is the recall void even if the fault reoccurs as in if the fault code is present when i go in?

What members have posted around the forum the acceptance criteria seems to vary.

mileage is 75,230

31391 - Manifold / Barometric Pressure Sensor (G71) / (F96)
P0105 00 [00100000] - Malfunction

So the above is gone long time ago - not relevant issue anymore.

31103 - SCR NOx Catalyst Bank 1
P20EE 00 [11101100] - Efficiency too Low
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 3
Mileage: 120686 km

First incident 220 miles ago and has occurred twice since then (frequency 3).

MIL came on after about an hour and a half.

Based on my observations that was fairly typical pattern with old software - long duration journey where a DPF regen happened.
Some related measurements below - massive NOx emissions during DPF regen

Thread '[T6_measured] NOx emissions, AdBlue consumption, DPF regeneration - Before and after ECU update'

6 Jul 2022

Introduction​

An update campaign for T6 EU6 diesel engines took place in 2019-20. Affected engines were on van of model years MY16-MY18, including some of MY19.

For M1 class (passenger carriers, VIN WV2...) the update was an official recall.
For N1 class (VIN WV1....) the update was not classified as mandatory but was/will be done if faults (especially P204F, P20EE) show up. So basically the decision is left to service center.

In the paperwork it was mentioned that the update might increase AdBlue consumption slightly - as a compensation free AdBlue fill-ups were offered.

T6s...​

• mmi
• adblue ecu update nox t6_measured
• Replies: 15
• Forum: Engine, Gearbox, Exhaust, Drivetrain

• 
• 

 

[Led Sandwich]

Thanks so much I’ll give the local stealers a call and get it booked in for an update

 

[The Flying Scotsman]

Never knew we had a MIL (Mother In Law) light in the van.
No wonder it’s giving you such a nightmare

 

[Led Sandwich]

Never knew we had a MIL (Mother In Law) light in the van.
No wonder it’s giving you such a nightmare

it was a mistake from the moment i let her in.