Adblue question

[Peterw1966]

Hello all.
I have just bought a 2019 T6 kombi. It is my first vehicle with Adblue.
I noticed a couple of days after I got it that the Adblue miles was showing “- - -“.
I took it to my local VW commercial dealer and they took a look and plugged it into their diagnostics and said that it had been overfilled. They couldn’t sort it out there and then so I said I’d arrange to take it back at a later date. In the meantime, I needed to disconnect the battery whilst doing some work on the van. When I reconnected it, I noticed that the Adblue now shows “0 miles”.
I think it has plenty of Adblue in it. When I first saw the “- - -“ on the MFD I tried to fill it up and managed to get about 1 litre in before it overflowed. Also, the van seems to run fine.
Can anyone advise if this looks like the Adblue has been coded out? Would the VW dealer have been able to see this?
I would rather have the van running as standard. The cost of Adblue doesn’t seem too extortionate and I’d like to do my bit for the planet!
Equally, if it has been coded out due to a fault that is going to cost me a small fortune, I’ll leave well alone.
Thanks for any suggestions or comments.
Cheers
Peter

 

[roadtripper]

This would be a case of read the manual for your new van before filling stuff, over filling the adblue is a common error and the subject of many threads here.

D

Post in thread 'Overfilled AdBlue tank'

6 Jul 2025

Yikes, I've overfilled mine too. Never one to read a manual I just thought it would cope with whatever amount I put in. Why are these things so badly designed?.

Just the warning light currently, but the mileage to fill up continues to count down. What happens if it gets to zero but there is adblue in there? Will it be ok?

The tricky bit is I am holiday in the Republic of Ireland so booking in for a service will be tricky. I'm almost certain to go over the 1,000 miles I have left before info back to the UK.

Anyone ideas anyone?

Thanks

• Damobristol

 

[Peterw1966]

Unfortunately, there is no mention of “- - -“ reading in the manual.

 

[koolpc]

"---" means gone to lunch, back in 30 mins.

 

[Dellmassive]

---- in the AdBlue range normally indicates that the vans been mapped and the AdBlue deleted.

If it's over filled, you need to pump a few litres out. And see if the range resets.

But I'm fairly sure the ---- is the result of AdBlue delete.

Maybe @Dav-Tec can confirm?

 

[Zen007]

Hello all.
I have just bought a 2019 T6 kombi. It is my first vehicle with Adblue.
I noticed a couple of days after I got it that the Adblue miles was showing “- - -“.
I took it to my local VW commercial dealer and they took a look and plugged it into their diagnostics and said that it had been overfilled. They couldn’t sort it out there and then so I said I’d arrange to take it back at a later date. In the meantime, I needed to disconnect the battery whilst doing some work on the van. When I reconnected it, I noticed that the Adblue now shows “0 miles”.
I think it has plenty of Adblue in it. When I first saw the “- - -“ on the MFD I tried to fill it up and managed to get about 1 litre in before it overflowed. Also, the van seems to run fine.
Can anyone advise if this looks like the Adblue has been coded out? Would the VW dealer have been able to see this?
I would rather have the van running as standard. The cost of Adblue doesn’t seem too extortionate and I’d like to do my bit for the planet!
Equally, if it has been coded out due to a fault that is going to cost me a small fortune, I’ll leave well alone.
Thanks for any suggestions or comments.
Cheers
Peter

Adblue mileage on VWT6 2019 said 5000 and never moved for months so I put 10 litres of Adblue in …Getting back to London from Cornwall the engine warning light came on ..P20EEOO code came up on diagnostic ..catalyst efficiency below threshold…my mechanic is sorting it out now..this problem with Adblue is very common in U.K. and Europe

 

[Sasquatch]

Catalyst efficiency issues aren't anything to do with adblue.