NOx sensor and Adblue faults codes

[Teesix]

Hopefully mine is more helpful

Yeah, it is to me.
Mine's also a 102. I set off at the weekend from Devon around 10am where it had got down to a couple below freezing. About 60 miles into the journey (now around +5c) my engine warning light came on. This is the 3rd time it's happened in 12 months. On 2 occasions low temps were prevalent. The 3rd was in the summer.

On the 1st occasion the van was up in Hull and I needed to get it back to a garage nearer my home down south. I called the AA and they said it was an ad-blue fault and cleared the codes. When I took it to the VW garage they said they couldn't do anything because the codes had been cleared. They reckoned they had had to put 10 litres of ad-blue in the van despite me putting 10 litres in two month's previously and had only done several hundred miles since.
The second occasion (same fault) they did a software change. All seemed good until the weekend when the light came on again.
The garage can't take the van for another couple of weeks so I don't know what the outcome will be. I may just call VW Assist and get them out. They can then contact the garage and get me a queue jump.
I really don't need this happening every 3 or 4 months, especially as it's out of warranty in September.

 

[Weedoe69]

Van has been back to VW 4 times in 3 weeks with engine and AdBlue warning lamp issues. After replacing sensor and injector they completing a complete test and rest, they are now looking to replace the catalytic converter. Problem is there are none available. Guess this is more wide spread issue than they would like admit.

 

[Mupp3tt]

I'm starting a new thread to make it easier to search this issue.

I recently experienced the following problems with my van. It's a Euro 6 102bhp 2017 model.
Basically my mpg started to decrease significantly and my adblue consumption started to go through the roof, for no good reason. Eventually the engine management light came on and I did a scan with VCDS.

Address 01: Engine Labels: 04L-907-309-V2.clb
Control Module Part Number: 04L 906 056 KA HW: 04L 907 445
Component and/or Version: R4 2.0l TDI H02 4047
Software Coding: 00114010432501090000
Work Shop Code: WSC 02737 790 50316
ASAM Dataset: EV_ECM20TDI03004L906056KA 004003 (VN75)
ROD: EV_ECM20TDI03004L906056BF_004.rod
VCID: 76E82E43C941D5F6BB-8022

2 Faults Found:

33262 - Reductant System Performance Bank 1
P204F 00 [096] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear

31103 - SCR NOx Catalyst Bank 1
P20EE 00 [236] - Efficiency too Low
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 4
Mileage: 14818 km
Date: 2009.01.05
Time: 13:08:19

Engine speed: 2466.00 /min
Normed load value: 58.8 %
Vehicle speed: 104 km/h
Coolant temperature: 90 °C
Intake air temperature: 7 °C
Ambient air pressure: 990 mbar
Voltage terminal 30: 14.820 V
Dynamic environmental data: 20 96
Unlearning counter according OBD: 40
Air mass at air mass meter 1: 208.8 kg/h
Extern.temp.sens.1 bank 1: raw value: 6.0 °C
Mass airflow sensor 1 bank 1 airflow: raw value: 712.2 mg/stroke
Throttl.valve adapt. 1 bank 1: posit feedback - Act.value: 0.00 %
NOx sensor before SCR cat conv: offset correction factor: 0 ppm
NOx sensor after SCR cat conv: offset correction factor: 216 ppm
Reducing agent quality sensor: urea concentration: 0.00 %
Reducing agent quality sensor: raw temperature value: 0.0 °C


Readiness: 1 1 0 0 0

How has your van been after the NOX replacement? I've just had a multitude of faults come up and one being this.... also an intermittent issue on the EGR .. as you said MPG has been going down, van is running rich and no other issues other than a drained battery one day and down 15bhp on power .

So a few issues that could all relate. Ha ha

 

[Jfoz]

2017 102 model, recent engine light came on, 2 error codes came up using obdeleven. Second times its happened during this weather (-2/-3) neebr happened in the warmer months since owning the van. Haven't topped up adblue for a few weeks still on 3500 range.

Is it just the cold weather causing the issue? Or is the NOx sensor needing to be replaced?

 

[mmi]

2017 102 model, recent engine light came on, 2 error codes came up using obdeleven. Second times its happened during this weather (-2/-3) neebr happened in the warmer months since owning the van. Haven't topped up adblue for a few weeks still on 3500 range.

Is it just the cold weather causing the issue? Or is the NOx sensor needing to be replaced?

Please post full scan of engine section. Also 12 first digits of the VIN.

 

[Carp catcher]

@Jfoz i have had the same 31103 fault code on my van. The diagnosis was to change the NOx sensor, which, as my van was out of warranty, I paid for £680. The light came back on.
Before you go spending money on anew NOx sensor, make sure they check to se if your van has had the latest VW adblue update carried out.

 

[Sackmycook]

My 2019 102 PV just been in for an orange EML on dash. Despite the service manager previously saying a 2019 would have had the latest Adblue software update, it hadn't. So, its had the update today along with 8 free adblue top ups voucher.
For info my truck had a build date of Jan 2019, first registered in April 2019.

 

[Jfoz]

I've just been told my VWCV Twitter support that there is no outstanding Adblue update for my 2017 transporter 102

 

[mmi]

I've just been told my VWCV Twitter support that there is no outstanding Adblue update for my 2017 transporter 102

Please post full scan of engine section. Also 12 first digits of the VIN.

 

[Jfoz]

Please post full scan of engine section. Also 12 first digits of the VIN.

I will post a full scan of engine section when the engine light comes back on as I just cleared it last time! Or does it not need to be on?

 

[mmi]

I will post a full scan of engine section when the engine light comes back on as I just cleared it last time! Or does it not need to be on?

No need to have light on - just curious what software + it's version is in there.
That information is in the "scan" - when you plug in - "Connect" and "Scan" - then. e.g. email the result to yourself. Just copy the section here.

 

[Jfoz]

No need to have light on - just curious what software + it's version is in there.
That information is in the "scan" - when you plug in - "Connect" and "Scan" - then. e.g. email the result to yourself. Just copy the section here.

Will post results later on this afternoon/early Evening, thank you.

 

[Jfoz]

This is what I got when emailed to myself:
VIN - WV1ZZZ7HZHH1

OBDeleven data log Date: 2021-02-16 15:36 VIN: WV1ZZZ7HZHH129840 Car: Volkswagen Transporter Year: 2017 Body type: VAN Engine: CXGB 75 kW (102 HP) 2.0 l Mileage: 68580 KM ---------------------------------------------------------------

01 Engine System description: R4 2.0l TDI Software number: 04L906056KA Software version: 4047 Hardware number: 04L907445 Hardware version: H02 ODX name: EV_ECM20TDI03004L906056KA ODX version: 004003 Long coding: 00114014432501090000 Trouble codes: No trouble codes found ---------------------------------------------------------------

03 Brakes System description: ESC Software number: 7E0907379P Software version: 0133 Hardware number: 7E0907379M Hardware version: H06 Serial number: 40447000001758 ODX name: EV_Brake1ESCCONTIVN75XGP2 ODX version: 011001 Long coding: 557E409825648487AA7D027AA48221E6790000 Trouble codes: No trouble codes found ---------------------------------------------------------------

04 Steering Angle Sensor Trouble codes: No trouble codes found ---------------------------------------------------------------

08 Air Conditioning System description: Climatic-T5 Software number: 7E0907047AK Software version: 0708 Hardware number: 7E0907047AK Hardware version: H22 ODX name: EV_ClimaticT5 ODX version: A01003 Long coding: 0000000003 Trouble codes: No trouble codes found ---------------------------------------------------------------

09 Central Electrics System description: BCM PQ25 Max4 Software number: 7E0937090B Software version: 0744 Hardware number: 7E0937090 Hardware version: H81 Serial number: 0982 038172965 Long coding: A0A4303A0A61343193284F746CEB8E740F84708F60CC6D60320400220840 Subsystems: System description: RLS 060217 04 Software number: 5K7955559C Software version: 0106 Hardware version: 42 Long coding: 0228EE System description: J386__TSG_FT Software number: 7E0959801P Software version: 0653 Hardware version: 003 Serial number: KU0KU008021770396223 Long coding: 1400B0 System description: J387__TSG_BT Software number: 7E0959802P Software version: 0653 Hardware version: 003 Serial number: KU0KU008021770397445 Long coding: 0400A0 System description: DWA-Sensor 00 Software number: 7E1951172 Software version: 0104 Hardware version: 001 Long coding: 000000 System description: LIN BACKUP HO Software number: 1K0951605F Software version: 0008 Hardware version: H01 Long coding: 000000 System description: DWA-Sensor 00 Software number: 7E1951172 Software version: 0104 Hardware version: 001 Long coding: 000000 System description: E221__MFL-DC1 Software number: 7E0959442 Software version: 0103 Hardware version: H02 Serial number: 29160003445360117027 Long coding: B0FFFF Trouble codes: 03303 - Return message for left rear door closing condition Implausible signal Intermittent Priority: 2 Frequency counter: 7 Driving cycle: 132 Mileage: 68336 km ---------------------------------------------------------------

10 Parking Assistance System description: PARKHILFE 4K Software number: 7E0919475T Software version: 0212 Hardware number: 1Q0919475 Hardware version: H03 Serial number: 32961635202859 ODX name: EV_VW75XParkAssis4K ODX version: 001013 Long coding: 10800A Trouble codes: No trouble codes found ---------------------------------------------------------------

15 Airbag System description: VW10Airbag021 Software number: 7E0959655G Software version: 0018 Hardware number: 7E0959655G Hardware version: H08 Serial number: 003V3003VPJT ODX name: EV_AirbaVW10BPAVW12X ODX version: 001028 Long coding: 000000000000000000000000000000003231 Trouble codes: No trouble codes found ---------------------------------------------------------------

17 Dashboard System description: KOMBI Software number: 7E0920970S Software version: 1104 Hardware number: 7E0920970S Hardware version: H03 Serial number: 00000000000000 ODX name: EV_Kombi_UDS_VDD_RM09 ODX version: A05733 Long coding: 750B010300 Trouble codes: No trouble codes found ---------------------------------------------------------------

19 Gateway System description: GW-K-CAN TP20 Software number: 7E0909901 Software version: 0744 Hardware number: 7E0937090 Hardware version: H81 Long coding: 042305 Trouble codes: No trouble codes found ---------------------------------------------------------------

25 Immobilizer System description: IMMO Software number: 5K0953234 Software version: 1104 Hardware number: 5K0953234 Hardware version: H03 ODX name: EV_Immo_UDS_VDD_RM09 ODX version: A03710 Long coding: 000000 Trouble codes: No trouble codes found ---------------------------------------------------------------

5F Multimedia System description: MU-E-D-ER Software number: 1K8035150L Software version: 7085 Hardware number: 1K8035150L Hardware version: 055 Serial number: 23011700010673 ODX name: EV_MUEnt4CGen2LGE ODX version: 001032 Long coding: 065700003C00000041111101008000001F0000C60000010001 Trouble codes: No trouble codes found ---------------------------------------------------------------

61 Battery Regulation System description: Batt.regelung Software number: 7E0907534 Software version: 0744 Hardware number: 7E0937090 Hardware version: H81 Serial number: 0982 038172965 Long coding: 030B7A73 Subsystems: System description: J367-BDMConti Software number: 7E0915181K Software version: 1050 Hardware version: H03 Serial number: 75410903921701202103 Trouble codes: No trouble codes found

 

[mmi]

I've just been told my VWCV Twitter support that there is no outstanding Adblue update for my 2017 transporter 102

I'd like to disagree with the Twitter support.

The engine software yours (below) is the original one from factory.
---------------------------------------------------------------

01 Engine​

System description: R4 2.0l TDI​

Software number: 04L906056KA​

Software version: 4047 ​

Hardware number: 04L907445​

Hardware version: H02​

---------------------------------------------------------------
The current engine software is the following:
---------------------------------------------------------------

01 Engine​

System description: R4 2.0l TDI​

Software number: 04L906056KA​

Software version: 6163​

Hardware number: 04L907445​

Hardware version: H02​

---------------------------------------------------------------
However, for N1 class (basically VIN WV1....) the update has not been classified as mandatory (as it was for passenger carriers) but should be done if faults (especially) P204F, P20EE show up.
A related thread --> https://www.t6forum.com/threads/adblue-discussion-and-issues.8270/post-346774

 

[Jfoz]

I'd like to disagree with the Twitter support.

The engine software yours (below) is the original one from factory.
---------------------------------------------------------------

01 Engine​

System description: R4 2.0l TDI​

Software number: 04L906056KA​

Software version: 4047 ​

Hardware number: 04L907445​

Hardware version: H02​

---------------------------------------------------------------
The current engine software is the following:
---------------------------------------------------------------

01 Engine​

System description: R4 2.0l TDI​

Software number: 04L906056KA​

Software version: 6163​

Hardware number: 04L907445​

Hardware version: H02​

---------------------------------------------------------------
However, for N1 class (basically VIN WV1....) the update has not been classified as mandatory (as it was for passenger carriers) but should be done if faults (especially) P204F, P20EE show up.
A related thread --> https://www.t6forum.com/threads/adblue-discussion-and-issues.8270/post-346774

How would I go about getting this updated? Does it have to be a VW garage/service centre?

 

[Carp catcher]

I did check with vwcs re if the where any outstanding updates for my van, which was a 2017 150bhp. They also told me that there where none.
When the garage I use checked, they said it had the old update on it, so put the new one on.
I absolutely love the vans, but have very little faith in the customer service side of things

 

[Carp catcher]

@Jfoz, most garages can carry out the update as far as I am aware, they may charge you though.
I wouldn't hold out much hope of VW doing it for nothing, although morally they should.
I had had my van re mapped which did muddy the waters with my van.

 

[T6Paul]

I had to pay £80 to get mine (2017 150bhp) updated as they said there was no recall outstanding despite being an old version of the software and the EML on. No free ad-blue either. I was warned that the ad-blue consumption would increase after the update, but wasn’t expecting to be using nearly double. A full tank used to last 5500 miles now struggles to do 3500 miles. But on the plus side no engine lights and it seems to run better!

 

[mmi]

I was warned that the ad-blue consumption would increase after the update, but wasn’t expecting to be using nearly double. A full tank used to last 5500 miles now struggles to do 3500 miles.

Let's check that again in summer? My impression is that the AdBlue consumption (with the update) was not much different in summer but guzzling now in subfreezing temperatures.

---

EDIT:
Statistics one year later:

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

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...

www.t6forum.com

 

[Jfoz]

Looks like I'll have to pay £80 also to have it updated. Will need to wait for the engine light to come back on (if it even does) to booked it in to VW centre. Im still under warranty with RAC, maybe that would cover it