Problem with 2018 Peugeot Boxer Adblue system

[KNWH]

I added 5 litres of Adblue to our Motorhome just before we set off today for the Western Isles. It wasn’t showing low, but I wanted to make sure it was OK for the whole trip.
After about 100 miles a warning message came up saying something like ‘Adblue system fault’ and the symbol below appeared.
This did go out again later but came back again at around 140 miles and stayed on.
When we got tonight’s campsite at around 350 miles the message ‘Check engine’ appeared.
Looking at the handbook it suggests the engine will refuse to start after 250 miles from the the fault appearing! So in about 40 miles!

Anyone had this problem, or got any suggestions.
The Adblue was from Aldi, but it was only a couple of months old and I’ve kept it in the dark before adding it.

 

[Jon Stuart]

The earlier Adblu cars required a minimum amount of Adblu to be added before the system would recognise the addition.

Our Seat Alhambra is min 10l.

Any chance that this applies to motorhomes as well?

 

[Jenka]

I had a 2017 van with simlar issue it was the pump and as housed in the tank required full changing ,I would get it checked for a fault code.

 

[oldiesontour]

Ours is a 2020..got check and blue,Adblue low,it want filled up no change 100 miles later Engine will not restart in 460 miles got 30 miles from home engine will not restart..got home 3am next morning engine would not start..connected diagbox got it started drove 20 miles with no start counter running...had Adblue deleted £250 no further problems 2 MOT 's later all good

 

[oldiesontour]

Should add likely a new tank ( pump level gauge and control electronics all in tank) APX £800 OEM from Neo brothers eBay,fitting and aligning a decent local garage £2/300

 

[KNWH]

The earlier Adblu cars required a minimum amount of Adblu to be added before the system would recognise the addition.

Our Seat Alhambra is min 10l.

Any chance that this applies to motorhomes as well?

My first thought was to add some more Adblue, but when I checked the handbook I realised a low Adblue level gives a different warning symbol, not the one I’ve got.

 

[BobJayne]

...had Adblue deleted £250 no further problems 2 MOT 's later all good

It sounds like the easiest solution is to delete Adblue and move on.

 

[oldiesontour]

If you can find a local re mapping company with the required equipment ( which any remapper will have ) it's literally a 10 minute job.A new tank fitted is likely to be main dealer on the continent will be £2000 ISH and waiting while they get one...my advice would be have it deleted..at least till you get home then you have the option of having it re installed and the original fault rectified or leaving as is

 

[Jenka]

Mine went in Germany €1500 euros part ordered 2hrs to fit they ordered the part at 1700 and back on road next morning.
Or risk £2500 fine for disabling the system.

 

[oldiesontour]

With regard to the legality it is illegal to delete it but A .it's highly unlikely you would be caught as specialist diagnostic equipment is needed.B It's highly unlikely you would be prosecuted especially if you didn't buy the van new C If caught most likely outcome would be having to prove it had been reinstated before using the van again.Any fine is unlikely,a heavy one even less so...but not impossible..the legislation is used mostly to prevent truck owners deleting it to save considerable amounts of money on not only repairs but on the large amounts of Adblue they buy

 

[KNWH]

An update, as I always think it’s a bit bad when people respond with helpful suggestions and the OP never comes back with anything further.
Since I’d got breakdown insurance with Autoaid, once we’d arrived at our first planned campsite I contacted them the next morning. Despite it being a Sunday they responded quickly and a guy turned up within the time they said he would.
He checked the error codes and all it came up with was low Adblue level. Since it had had 5 litres the previous day, and only as a precaution as it was not showing low level, this seemed odd, but he deleted the error and the engine started without any warning lights.
I suspected this was not the end of it and sure enough when we left a couple of days later the warning messages reappeared.
I called in at a Portree garage when we reached Skye and, although they couldn’t look at it then they told me to return the next day. I just wanted them to delete the error so, if a 250 mile counter had started (although there was nothing to this effect showing on tne dashboard) at least I’d have another 250 miles before I needed to worry, which would cover our planned Outer Hebrides trip.
Whilst there I bought a bottle of stuff that was supposed to get rid of any crystals in the tank and bunged it in just in case it helped. It didn’t.
Meanwhile I ordered an OBD reader off Amazon for next day delivery (annoyingly I had one at home but hadn’t brought it with me for some reason )
Went back to garage today and they found a ‘low Adblue pressure’ fault which they again cleared. Could be pump or blockage before the pump?

Hopefully I can keep clearing the fault every 200 miles or so until I get home and can get it assessed properly.
I am not really happy with the idea of remapping to delete the system, although I might have considered it as a temporary solution just to allow the trip to go ahead.

Will update when/if the problem is finally sorted