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Discussion Starter #1
I am looking for some advice on how to proceed after my local Peugeot dealer investigated the "UREA : Emission fault warning message" and revealed fault code P20E8 00.

They topped up the urea tank (although the dash message still showed more than 1500 miles remaining) and cleared the fault. They said that if the fault message returns I will need a complete new urea tank costing over £1,000 !!

Guess what, 5 miles later the message returned. I went back to the dealer, but no joy. They believe the fault means the pressure of the urea fluid is too low, which means a new complete tank. The car is a Sept 2014 2.0 Bluehdi 150, and so is only a few months out of warranty. It has had all the recalls undertaken including the urea wiring loom.

So, what could be the causes of low pressure. A hole in the tank ? A faulty pump ? A blocked atomiser nozzle ? Are any of these fixable without replacing the entire unit ?

Would any of you know of a specialist who could look at this....other than one of the main dealers ?

Any help and advice would be very welcome. Thanks.
 

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I had issues with repeated false urea alarms. Was expecting loom replacement etc. but in fact all it required was a new cap to maintain pressure (under warranty - just!). I would make sure the cap has been considered before any major surgery on the system is undertaken, particularly now you are out of warranty ;)

I am sure they said it was a recall item? Or maybe just done under warranty. I didn't take the car in so can't recall, sorry.... Not sure why you dealer not up to speed on this, but TBH nothing surprises me with these guys :nono:

Sure a cap couldn't be that expensive (could it? :rolleyes:), got to be worth a punt nonetheless :thumb:
 

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The TSB reference for the New cap for Ad Blue filler is HUH. Unsure if that was related to filling level not resetting rather than to tank sealing issue - but worth a shot. Mine's a May 2015 plate so be interested to hear if it gets resolved or I have a potential £1,000 cost looming......
 

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Yes, got to be worth a punt.

A cap was definitely used to resolve my P20E8 'reductant pressure' fault code, this solution maybe not have been applicable in all cases though.

I am sure the system could be repaired given it's 'relative' simplicity but unfortunately as seen across the board these days given the willful restriction/unavailability of sub-components or repair solutions it is far easier to replace whole items/systems at great cost rather than bother with any of that repair malarkey :rolleyes:
 

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Discussion Starter #6
Thanks for your comments.

I have gone to another Peugeot dealer to buy the latest Adblue tank cap (part number 16 319 998 80) which seems to be the cheapest part to replace as a start point. Although it was £19.54!

I have also ordered an OBD2 fault code reader/reset tool, and I will let you know how things go with the new cap when I have erased the codes this weekend.

BTW, I also asked the dealer price for a new tank. They quoted £950 for the part alone + fitting. A quick look on Ebay shows part number 16 101 155 80 as the Adblue tank/pump for £150.

Can anyone confirm that part number as correct ? Also, does anyone know what is involved in replacing the Adblue tank ?

....to be continued
 

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Discussion Starter #7
Update

Fault code erased, new Adblue cap fitted to tank. 3 miles later, the P20E8 fault code pops up again.

The Adblue cap looked identical to the one that was on the car, so I guess the HUH recall (for a new style cap) wasn't necessary on my car.

So, looks like the replacement tank is the only option. I believe the pressure sensor and pump are built into the tank. Can anyone confirm if that is correct ?
 

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Would forcing a Urea level reset help? If you read the manual it suggests leaving your ignition off for 5 minutes, all doors shut etc, then waiting 10 seconds after turning the key before starting the engine. I believe one of the reasons for replacing the wiring loom was because it was giving false level readings and not fully resetting once topped up.
 

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Discussion Starter #9
Hi Forest37,

Thanks for your suggestion. I did try that but without success. I think the fault code indicates low urea fluid pressure (which I guess could be caused if the tank was empty). However, the dealer did top up the tank and turn off all the warning lights.

Now, each time I turn off the warning code, it reappears after a few miles.

Anyone else with some knowledge of how the tank is removed and replaced?
 

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The car is a Sept 2014 2.0 Bluehdi 150, and so is only a few months out of warranty. It has had all the recalls undertaken including the urea wiring loom.

.
You said a few months out of warranty I make it that's it is almost a year out of warranty.
Had it been just out of warranty I would have been in touch with Peugeot customer service to see what they thought on your situation.
( In my case I'm low mileage at 3 years I will have done 18K miles.)
 

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there is a known (undocumented) issue with 2.0 BlueHDI adblue tanks which were made between 2014-2018.

let me explain you the details: during driving it seems the vent valve system didn't work well. under-pressure was developed (i.e. :vacuum) . The urea pump now had to work twice as hard (if not more).
Eventually the pump would fail. you get P20E8... both engine and urea leds will turn on. error will tell you something about emission fault.
so PSA recignized the problem when pumps failure rate was too high. therefore , on end of 2017, they released a new AdBlue tank cap . this time with a small pressure release valve (a white circle in the middle of the cap)

However, if your pump is too worn-out... it won't help you. most likely a worn pump will fail prematurely.
By then you will need to replace pump (alas ... there is no pump part number so you need to buy the whole adblue tank. expect £800+ price tag outside warranty).
So far Peugeot hasn't release a formal TSB but I know they are considering. Afterall, its not a safety failure and it is not a cheap wiring loom. worst thing is engine polluting the air for 700 miles (you will start to smell it).
in your model replacing the cap wasn't sufficient. The whole tank ventilation system was redesigned.
A new PSA part number was created for the upgraded tank. search for the new tank part number. your dealer will tell you exact number.
Other models of PSA also suffer from same issue, howeve, sometimes an early cap replacement saved the pump.
I know that I bring it a bit late for the first post and it doesn't bring comfort but at least you know what happened...
 

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Discussion Starter #12
Hi Save2,

That is a really interesting and helpful explanation. Thank you.

Looks like the solution for me (and many others with a similar model and year) will have to be a new tank.

On the suggestion of an out of warranty claim, I have reckoned on the part (£950) and labour (est. £650) coming to £1600, and then Peugeot offering a 50/50 settlement which would probably still make them a profit but cost me £800.

I think I could find an independent to fit the part for less than that...

Any thoughts ?
 

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Hi Mike
as most of you will encounter the problem out if warranty:
if you look online you will find the (new) tank for 700-800EUR around Germany, France,etc.
Alternatively: find a used tank but from the newer model. Many new cars have huge frontal accidents....
you can import the tank. if your supplier is charging more: they are ripping you off.

The installation itself is very simply. half an hour work (even less).
Then a small ECU update since the tank was changed.
The labour should be no more than £100-£150 including using the Peugeot Planet to program the new tank. Find yourself an honest workshop that knows how to program french cars...


Peugeot offering a 50/50 settlement ...
Peugeot settlement ? he he ... what a joke...its the full price.
 

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Discussion Starter #14
Hi Save2,

Top man, thanks again. I'll keep going down that route and will report back on my way forward....

Mike
 

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Interesting, i'll have to go and check my cap!

Do you think a 17 plate (first reg aug 2017) would be affected? i'm actually in peugeot on thursday for some other warranty fixes so might quiz them!

if its the old system would regular removal of the cap (once a week or so) release the vacuum and extend the life somewhat, or failing that drill a small release hole?

Or does it need a certain amount of vacuum to operate?

Edit: d'oh just realised this applies to the 2.0 not the 1.6, will leave the questions up anyway just in case!
 

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Interesting, i'll have to go and check my cap!
Edit: d'oh just realised this applies to the 2.0 not the 1.6, will leave the questions up anyway just in case!
1.6 as well as 2.0L BlueHDI engines had a TSB to replace the cap. you should have the new cap ASAP.
drilling a small hole would also work.

For most 1.6 BlueHDI:
here is the old cap: http://infodiesel.fr/wp-content/uploads/2016/05/adblue-reservoir-citroen-berlingo-1.jpg
new cap: (cap location changes between models)
https://imgur.com/vcv9ioo
 

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Thanks for the info, i'll get a pic of mine shortly because it looks a bit different!

I'm in a bit of a weird situation as my car was a Cat S writeoff, so i'm trying to get as much of this warranty stuff done before it hits 12 months/16000 and they start refusing me!

If they do the cap is there also an ECU update to be done as well?

Also going in for a creaking clutch pedal and intermittent hesitation, fingers crossed!

Edit: here it is https://imgur.com/a/2h1swm2

As you can see they did a fine job of not splashing it everywhere when it last went in! :lol:

Edit again! whoops didnt see both pics at first, looks like mine is the new one with just a different coloured blob on top!
 

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Discussion Starter #18
Hello again Save2,

Sorry to pick your brains again, but do you have the part number for the new version of the Adblue tank that you mentioned.

I have been told that part number 1610115580 is the correct part. However, if I am sourcing from third parties I want to make sure I get the new tank not an old one like the one I have already !

All the best

Mike
 

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as the cap doesn't contain any electronics (yet) : no software update is needed.
Provide your dealer with your VIN number they will give you the latest tank number. For such info they should not charge anything.
It is 1 minute check inside Peugeot Planet software. it always returns the latest available.

BTW: I already checked: official Peugeot support will deny any problem with the AdBlue tank/pump but you can ask them...
 

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I have been told that part number 1610115580 is the correct part. However, if I am sourcing from third parties I want to make sure I get the new tank not an old one like the one I have already !
That shows as the PEF additive tank on servicebox, not an adblue tank?

https://imgur.com/a/Br4fUqn

I'd ask the service dept of the dealers, they will give you this quite freely normally :thumb:
 
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