Survey of Adblue issues suffered by T6 Forum Members

[ThunderboltFMF]

I booked my van in to VW to have it reset and the latest software installed. £300 later it is done.

 

[Salty Spuds]

Well known fault which always appears on French holidays when you’re more than 650 miles from a ferry- all will be well when you get back to Blighty, enjoy the rest of the trip

You might actually be onto something there. This year I've had the yellow "Cat" light on twice, both times I was half way down France, once in January on our way to the Alps, and the second time about 6 weeks ago on our way to Spain. It stayed on for a couple of hundred miles and cleared itself. The fault on both occasions was "NOx reductant bank 1 efficiency" or something similar. I suspect it's a sensor on it's way out.

 

[Ayjay]

@mmi - sorry for the delay in coming back to you. What do you mean by 'Could you please share again Carista Detailed ECU info'? I can't remember posting it in the first place (which doesn't mean much other than I've forgotten about it!). In any event, I probably deleted the file a while ago. I did run another Carista report a week or so again but it didnt show any errors

 

[mmi]

What do you mean by 'Could you please share again Carista Detailed ECU info'?

The previous ECU info

Post in thread 'Adblue and Exhaust warning light poll- what is happening to who, with what vans, driving how, is the problem getting fixed, how long is this taking..'

5 Nov 2021

@mmi. Here you go. I've deleted part of the VIN number but if you need it I'll PM you. I've got VW Assist coming to see me this afternoon and I'll ask them to look at the other fault codes while they're here. I'm hoping that won't be an issue, particularly as one of them seems to relate to the battery which I think is on the way out.

• Ayjay

• 

did run another Carista report a week or so again but it didnt show any errors

Not the errors but curious to see what the engine software is currently running.

Post in thread 'Adblue and Exhaust warning light poll- what is happening to who, with what vans, driving how, is the problem getting fixed, how long is this taking..'

5 Nov 2021

@mmi. Here you go. I've deleted part of the VIN number but if you need it I'll PM you. I've got VW Assist coming to see me this afternoon and I'll ask them to look at the other fault codes while they're here. I'm hoping that won't be an issue, particularly as one of them seems to relate to the battery which I think is on the way out.

Thank you. No need for VIN's last digits.
31103 is just VW's own code for P20EE, thus only 1 fault there. Anyways, there is an engine software update (version 6166) available for your CXHA engine. The update should cure false alarms of this...

• mmi

• 

 

[Ayjay]

@mmi. Thanks for that - I'll run Carista later today (or perhaps tomorrow) and post the result. I'm not surprised that I didn't remember the previous post - I sometimes forget what I did yesterday so nearly 5 years ago is ancient history to me!

 

[Sim667]

I’ve got an adblue issue currently



The vans going back to VW tomorrow. This is the first bonnet based thing it’s going back for, the other stuff was a dodgy heated wing mirror, the sos module and an iffy USB.

I’ve got the all in plan, so hoping that will cover it

 

[Ayjay]

The previous ECU info

Post in thread 'Adblue and Exhaust warning light poll- what is happening to who, with what vans, driving how, is the problem getting fixed, how long is this taking..'

5 Nov 2021

@mmi. Here you go. I've deleted part of the VIN number but if you need it I'll PM you. I've got VW Assist coming to see me this afternoon and I'll ask them to look at the other fault codes while they're here. I'm hoping that won't be an issue, particularly as one of them seems to relate to the battery which I think is on the way out.

• Ayjay

• 

Not the errors but curious to see what the engine software is currently running.

Post in thread 'Adblue and Exhaust warning light poll- what is happening to who, with what vans, driving how, is the problem getting fixed, how long is this taking..'

5 Nov 2021

@mmi. Here you go. I've deleted part of the VIN number but if you need it I'll PM you. I've got VW Assist coming to see me this afternoon and I'll ask them to look at the other fault codes while they're here. I'm hoping that won't be an issue, particularly as one of them seems to relate to the battery which I think is on the way out.

Thank you. No need for VIN's last digits.
31103 is just VW's own code for P20EE, thus only 1 fault there. Anyways, there is an engine software update (version 6166) available for your CXHA engine. The update should cure false alarms of this...

• mmi

• 

@mmi. Here you go - I downloaded it about a couple of hours ago. As an aside, I noticed for the first time that Adaptive Cruise Control is mentioned in the reports and I didn't even know that the van had it. Until now, I thought the radar in the front of the van was there just for 'City Braking' (not that I have ever noticed either that or ACC kicking in!).
Let me know if you need anything else.

 

[Salty Spuds]

@mmi. Here you go - I downloaded it about a couple of hours ago. As an aside, I noticed for the first time that Adaptive Cruise Control is mentioned in the reports and I didn't even know that the van had it. Until now, I thought the radar in the front of the van was there just for 'City Braking' (not that I have ever noticed either that or ACC kicking in!).
Let me know if you need anything else.

You can tell if you have ACC by the steering wheel buttons. Have you got a pic of the left hand buttons?

 

[mmi]

Thanks.
The ECU has got the software which should have resolved false AdBlue issues. However, interestingly there is a quite recent update for the ECU

Current:


All software versions for this ECU:

Welcome to VAG-Flashinfo!

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

vag-flashinfo.de

@mmi. Here you go - I downloaded it about a couple of hours ago. As an aside, I noticed for the first time that Adaptive Cruise Control is mentioned in the reports

The radar module is a bit misleadingly labeled always by Carista as Adaptive Cruise. As @Salty Spuds mentions the steering wheel buttons tell if there actually is ACC.

 

[Ayjay]

You can tell if you have ACC by the steering wheel buttons. Have you got a pic of the left hand buttons?

@Salty Spuds. Pic below and no mention of ACC - just the usual 'normal' cruise control buttons:

 

[Ayjay]

@mmi. See above - I suspect you're right as usual.
On the subject of software, I suspect the ablue delete will happen before I ever go back to a VW dealer again - there must be good ones out there but all those that I've been to have been useless.

 

[Salty Spuds]

@Salty Spuds. Pic below and no mention of ACC - just the usual 'normal' cruise control buttons:
View attachment 333375

Nope! No cigar