More Adblue woes

[Keith 81]

Had a few issues with adblue on my 2016 102 t6 had it in the garage and all was ok now got and error adblue (Def) on the dash I've scanned it with vcds no error codes related to adblue although have an egr sensor implausible signal fault . It has happened before then cleared itself some the later but I would like to get it bottomed out . Any ideas gurus

Thanks Keith

 

[mmi]

vcds no error codes related to adblue although have an egr sensor implausible signal fault .

Share the full scan please.

 

[Keith 81]

Will get a full scan on later is there any live data that would help I'm a vcds newbie so it's a bit of a steep learning curve

 

[mmi]

Besides the Auto-Scan it's always good idea to make a full data extract from engine -

Engine running (preferably "hot" - after some driving, 15+ minutes)

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 a file blockmap-01-... in folder C:\Ross-Tech\VCDS\Logs\....

 

[Keith 81]

Here is the full scan and the block map data thanks for any help im at my whits end

 

[Keith 81]

To my untrained eyes the urea concentration and invalid sensor looks suspect

 

[mmi]

Thanks - interesting indeed...

To my untrained eyes the urea concentration and invalid sensor looks suspect

These?

IDE10032	Reducing agent quality sensor: urea concentration	0
IDE10039	Reducing agent quality sensor: validity	invalid

I'm afraid those won't give us any clues as on quite a few T6 engines they are the same permanently. E.g. below the same engine as yours - although having previous
with exactly the same software version 04L 906 056 KA 6163. (edited)

Won’t start. No fault codes

Quote from WSM. (Download above) Lock high-pressurepump hub with diesel injection pumplock‐ ing pin- T10492- . Todo this,insert lockingpin intofork -2-on hub and into hole -1- behind it in bracket for ancillaries. – Pull out locking pin, and slightly loosen nut for high-pressure pulley. Before...

www.t6forum.com

About the subject on different engines below:

NOx sensor and Adblue faults codes

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...

www.t6forum.com

NOx sensor and Adblue faults codes

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...

www.t6forum.com

However - there are a couple of values (below) I haven't seen before

ENG110382-ENG20519	SCR inducem system status-deviation of reagent consumption	CONSUMP_DEVIATION
ENG110382-ENG20516	SCR inducem system status-inducement system active	active

Unfortunately I can't say anything definite on these - I believe they relate to recent P204F....
Note the mileage and time in freeze frame on P204F and P20EE are the same...

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Re the fault P046C - a proposal about testing "specified value" vs. "actual value" was below

Exhaust recirc.valve 1 bank 1: posit.feedback - Specified value: 3.29 %​

Exhaust recirc.valve 1 bank 1: posit.feedback - Actual value: 15.72 %​

Cylinder 3 glow plug code P13D600

Have this code on my vcds and engine lights on, has anyone changed this glow plug 3 (with sensor) themselves?

www.t6forum.com

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Re the fault P0401 - any history about (possible) EGR cooler replacement - the van already has accumulated 81000 miles.?

 

[Keith 81]

It has the original egr and cooler on I have ordered a replacement due any day it's the adblue countdown of death I'm worried about I'm due to go away next month and I'm unsure what steps to take next with it if I'm honest gutted

 

[Keith 81]

Is it possible that the egr could be causing the adblue error countdown aswell if the ECU is detecting hi Nox levels and metering extra adblue but not seeing a reduction

 

[WinFreak]

Mine has used a lot less adblu since the egr has been replaced

 

[Keith 81]

Bit of an update replaced inlet manifold aswell as egr as it was clogged up and seized still getting insufficient flow code I'm guessing is now the cooler as I didn't replace that however still getting adblue countdown fault but it will clear after 10miles or so of motorway driving but comes back when I'm tootling about .Have now had a reduction agent no flow detected error so I'm guessing the injector maybe underperforming so next steps are to replace that and clean out the egr cooler

 

[mmi]

still getting adblue countdown fault but it will clear after 10miles or so of motorway driving but comes back when I'm tootling about

So on motorway the AdBlue range resets back to "normal" (thousands of miles, with refill amount?) but eventually returns back to 650 miles - without refill amount?

Have now had a reduction agent no flow detected error

Could you please share the fault codes - ideally engine section from VCDS scan (Engine > Fault Codes > Save Codes)

 

[Stevie M]

Hi Guy's, I after some advice.
I have a 2017 T6, which whilst i was driving home the engine management light came on, then the Adblue.
A full diagnostics was carried out and I ended up having a new EGR fitted, But the Adblue light is still on.
The garage recommended that I drive it a distance and it should reset?
It has not, they then checked the level's to find it was over full so emptied it and re-filled, its still not reset. any advice would be greatly appreciated.

 

[JoelSinj]

My T6 2017 went in this week for AdBlue woes. This is my sequence which might help others:

- M25 went from 3500miles randomly to 1000 left. Got home (40 miles later) then gave me the dreaded 600mile countdown. Also, EML came on with EGR codes.

- Topped up with 10l of correct BS number AdBlue. Did not register. Still said 500miles left before not starting blah blah.

- Tried to reset SCR lock, and other AdBlue / SCR codes in VCDS. Allowed me to do the resets but no joy.

- Removed undercarriage and inspected tank and outside of injectors/pipework. All looked OK.

- Syphoned all the AdBlue out. All clear - no contamination - and around 11litres in the tank. Pulled all SCR fuses for 2 mins whilst empty. Re-fused, refilled tank...nothing

- Van software is 4047. Had local tuner round about a Stage 1 flash on Saturday last week. Resetting ECU version 4047 didn't help. (Didn't get a Stage 1 or AdBlue delete just yet as it was booked into VW)

- VW took it Tuesday this week. I said can they check if software 6136, as it should be on there from what I've read on T6 Forum. They said VW factory said it should be 4047 as that's the most up to date

- The rear EGR pipe was split and hissing like an angry cobra. That would explain the EML.

- That was changed, along with the front pipe (the new iteration from VW) and flush carried out

- Master Tech could not reset SCR / AdBlue system for love nor money. "He's been doing it 12 years and never seen this issue". Tried to suggest some ideas to the service advisors which was met with interesting responses.

- Master Tech put her into hibernation mode and hard reset. Still nothing.

- After another hour, got a call back to say they did a DPF forced regen (not sure what that is as not looked it up yet) and that allowed them to resest the SCR. AdBlue now showing 6000 miles in the tank.

Bit worried it might come back one day - so flipping temperamental. I've been quoted £280 for a 78bhp remap (Stage 1) and AdBlue delete, so is another option for future. I'm down in Kent if anyone needs that contact. He's mobile.

Hope this helps other people with AdBlue anxiety.

We're off for a night stay near the cost tonight. With 6000 miles of AdBlue in the tank

 

[mmi]

With 6000 miles of AdBlue in the tank

Well, as now it seems to be working correctly perhaps you could make some recordings - for comparison in future just in case.

It would be two sets

a) for Single Controller Address "01"​

b) for Single Controller Address "17"​

​

​

When all done there will be files blockmap-01-... and blockmap-17-... in folder C:\Ross-Tech\VCDS\Logs\.... ​

Please post the files.

 

[Sackmycook]

Software needs updating.....

 

[JoelSinj]

Well, as now it seems to be working correctly perhaps you could make some recordings - for comparison in future just in case.

It would be two sets

a) for Single Controller Address "01"​

b) for Single Controller Address "17"​

​

View attachment 168584​

When all done there will be files blockmap-01-... and blockmap-17-... in folder C:\Ross-Tech\VCDS\Logs\.... ​

Please post the files.

Thats a good idea.

Will do,

 

[JoelSinj]

Software needs updating.....

Some genuine transcription from my VW phone conversations for you:

"My engineers have been doing it 12 years. He knows what he's talking about" (you and your T6 mates don't basically)

"It's not needing a software update"

"It might be you deleted some code and that's why he can't reset the SCR". Response: NO. It came on around J12 of the M25 whilst going 78 mph. I've deleted nothing.


Personal favourite:

"I can read the internet and diagnose I am going to die tomorrow. Be careful what you're reading"

Response: yes but I am reading real-life experiences from people on a T6 forum, some of which are mechanics and VW specialists that have actually solved the problem you're trying to solve.

"I've worked here 2 years and never heard that as being a thing" (software).

Been a painful week.

 

[Loz]

Some genuine transcription from my VW phone conversations for you:

"My engineers have been doing it 12 years. He knows what he's talking about" (you and your T6 mates don't basically)

"It's not needing a software update"

"It might be you deleted some code and that's why he can't reset the SCR". Response: NO. It came on around J12 of the M25 whilst going 78 mph. I've deleted nothing.


Personal favourite:

"I can read the internet and diagnose I am going to die tomorrow. Be careful what you're reading"

Response: yes but I am reading real-life experiences from people on a T6 forum, some of which are mechanics and VW specialists that have actually solved the problem you're trying to solve.

"I've worked here 2 years and never heard that as being a thing" (software).

Been a painful week.

You can't argue with a denier (flat earther)

 

[Pete C]

I have found with VW dealers that giving them the ref number of the technical bulletin that VW themselves issued definitely helps.

Peter