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P20E8 fault code and urea tank
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Hello,
Peugeot Partner Teepee 1.6 Blue HDi 2016
First post so bear with me. I've had the, what now seems to be a common fault, Urea/Adblue fault scenario. I confess I haven't read all the posts - got to page 16ish and realised there were 41! so if I'm repeating what has been covered I apologise - so just want to chuck in my six penny worth.
At some point prior to my purchase of the car from a dealer (2019) the AdBlue cap had been replaced (blue cap with white insert). As a result of reading the initial entries of this thread, I cleaned the cap and then tried to blow/suck through it, I couldn't so I thought maybe it was blocked. I took the cap and prised out the insert then prised off the white cap. Inside there is a black moulding and an o ring (which seals the insert to the blue cap) and a white 'membrane' covering the opening to the tank. This membrane makes it IMPOSSIBLE for the insert to allow the tank to breathe! What is the point of that?
My thinking is FWIW is that the pump eventually starts to suck on a vacuum and eventually fails. (This hypothesis is discussed early on in the thread) I have fitted the blue cap back on the tank without the insert as a test and so far I have not had a fault. To be fair I've only done 60odd miles so far but will update if things change. Has anyone else forund the above issue with the cap?
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Peugeot Partner Teepee 1.6 Blue HDi 2016
First post so bear with me. I've had the, what now seems to be a common fault, Urea/Adblue fault scenario. I confess I haven't read all the posts - got to page 16ish and realised there were 41! so if I'm repeating what has been covered I apologise - so just want to chuck in my six penny worth.
At some point prior to my purchase of the car from a dealer (2019) the AdBlue cap had been replaced (blue cap with white insert). As a result of reading the initial entries of this thread, I cleaned the cap and then tried to blow/suck through it, I couldn't so I thought maybe it was blocked. I took the cap and prised out the insert then prised off the white cap. Inside there is a black moulding and an o ring (which seals the insert to the blue cap) and a white 'membrane' covering the opening to the tank. This membrane makes it IMPOSSIBLE for the insert to allow the tank to breathe! What is the point of that?
My thinking is FWIW is that the pump eventually starts to suck on a vacuum and eventually fails. (This hypothesis is discussed early on in the thread) I have fitted the blue cap back on the tank without the insert as a test and so far I have not had a fault. To be fair I've only done 60odd miles so far but will update if things change. Has anyone else forund the above issue with the cap?
Hello everyone,
I have a question regarding the behavior of the adblue tank once it is replaced by a new one.
I installed a new tank a week ago and I noticed that every time I finish a trip and I turn off the ignition, the pump starts to purge the urea in the circuit. The pump makes a noise for a few seconds.
In the diagbox, it is well noted: purge of the urea
Is this normal? I don't remember that the pump had this behavior before.
Thank you for your help.
I have a question regarding the behavior of the adblue tank once it is replaced by a new one.
I installed a new tank a week ago and I noticed that every time I finish a trip and I turn off the ignition, the pump starts to purge the urea in the circuit. The pump makes a noise for a few seconds.
In the diagbox, it is well noted: purge of the urea
Is this normal? I don't remember that the pump had this behavior before.
Thank you for your help.
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I fitted a new tank a month ago and mine does exactly the same.
apparently it’s totally normal, the new tanks depressurise the lines on ignition off now.
Just to give some positivity to this thread...
My car luckily came with 12 months Approved Used Warranty when purchased in September 2021. After diagnostics, which i had to pay £252 (2hrs) for, the warranty company have covered the replacement of the Adblue tank, NOX sensor and Urea injector. The Peugeot dealer then begrudgingly, after I asked to speak to the Branch Manager, refunded the £252.
Hopefully have many miles & years of good driving.
My car luckily came with 12 months Approved Used Warranty when purchased in September 2021. After diagnostics, which i had to pay £252 (2hrs) for, the warranty company have covered the replacement of the Adblue tank, NOX sensor and Urea injector. The Peugeot dealer then begrudgingly, after I asked to speak to the Branch Manager, refunded the £252.
Hopefully have many miles & years of good driving.
Ok ok i see. Good news.
I'm still working on some tank to find how to detect the origin of the problem. Now, i think that the main problem is the heat circuit inside the tank.
Czesc,
znalazlem Twoj wpis - na szczescie.
mam ten sam problem z UREA system.
mam pare pytan, czy jest mozliwosc skontaktowania sie z Toba?
pozdrawiam,
Arek
Hi, for about a month the p20E8 code appeared on the Peugeot 308 T9 2017 70,000 km car. In the morning, when the temperature was below 20 degrees, the system worked by regularly loading urea and the MIL alarm light off automatically. the MIL lights on again in the afternoon when the temperature was higher. now the ambient temperature always remains above 20 degrees all day and I can no longer carry out tests. I disassembled the tank to check its condition and found no urea leaks or corrosion of any kind.
I noticed this with the attached diagnostics:
I turn on the dashboard and for about 30 seconds I see the temperature of the urea tank (reliable in my opinion because it reflects the ambient temperature).
After 30 seconds the temperature drops to 0 degrees.
I turn off the instrument panel, wait about 30 seconds and turn it back on. I still see the temperature for 30 seconds.
If I do it with the car run and hot (DENOX catalyst over 200 degrees and NOX probe reading) the system starts pumping and injecting Adblue correctly but after 30 seconds the temperature drops to 0 degrees and the pressure drops from 6 bar to 4 bar .
The pump remains off with UREA and I lack the authorization from the pressure but I always have the authorization from the temperature.
I can continue to switch on and off and for the first 30 seconds I see the correct temperature and pressure allowing the Adblue system to work correctly.
I suspect that the problem may be related to the electronic circuit that regulates the J4 PLUG of the PCB (to which the ADBLUE pressure sensor, the AdBlue temperature and the ADblue level indicator are connected) but looking at the PCB I do not see anything abnormal capacitors or swollen.
Anyone have any suggestions?
If I perform the 'DENOX system defect reset' with the software, can I make the situation worse if the tank is damaged? Is it better to do this only when replacing the tank or other DENOX components?
What is this function for if the tank is not changed?
Thanks a lot to everyone
I noticed this with the attached diagnostics:
I turn on the dashboard and for about 30 seconds I see the temperature of the urea tank (reliable in my opinion because it reflects the ambient temperature).
After 30 seconds the temperature drops to 0 degrees.
I turn off the instrument panel, wait about 30 seconds and turn it back on. I still see the temperature for 30 seconds.
If I do it with the car run and hot (DENOX catalyst over 200 degrees and NOX probe reading) the system starts pumping and injecting Adblue correctly but after 30 seconds the temperature drops to 0 degrees and the pressure drops from 6 bar to 4 bar .
The pump remains off with UREA and I lack the authorization from the pressure but I always have the authorization from the temperature.
I can continue to switch on and off and for the first 30 seconds I see the correct temperature and pressure allowing the Adblue system to work correctly.
I suspect that the problem may be related to the electronic circuit that regulates the J4 PLUG of the PCB (to which the ADBLUE pressure sensor, the AdBlue temperature and the ADblue level indicator are connected) but looking at the PCB I do not see anything abnormal capacitors or swollen.
Anyone have any suggestions?
If I perform the 'DENOX system defect reset' with the software, can I make the situation worse if the tank is damaged? Is it better to do this only when replacing the tank or other DENOX components?
What is this function for if the tank is not changed?
Thanks a lot to everyone
if through software I try the Activate relay function, it is possible for me to do it only in those 30 seconds in which it reads the temperature. otherwise it tells me it is impossible to start the function.
Hello Chris-Foci,
Do you still have this behavior from your adblue tank ?
Do you have any other testimonial or information to be sure that this behavior is normal?
Thanks in advance
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I spoke to a Peugeot technician who stated the newer tanks all do this now to try and prolong their life. Still does it and seems to be working perfectly fine.
Ok ok thanks man!
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Seems the membrane on the cap is ventilated, or at least semi-permeable. My mistake.
High performance sealing membrane for AdBlue® fuel tank cap
Little part with a big effect: Sealing membrane made from Permeaflon®
www.berghof-fluoroplastics.com
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Hi there, this might be useful to anyone with AdBlue problems. Contact customer care!:
I bought a Peugeot Partner second hand in January 2021 ('65 plate), with 23,000 miles on the clock. The engine management light came on in April 2022, no one new what was wrong, apparently an emission fault. Four trips to two different garages later I was non the wiser. In early June the UREA light came on (despite a full AdBlue tank), just as we were due to go on holiday. I booked the car in with the local Peugeot dealer (earliest date four weeks later) and had to hope for the best, the light going on and off, going into limp mode a couple of times during the holiday. Eventually the diagnosis was a new tank at £1500 plus diagnostics at £138. That's when I read just about every post available on the matter and came across one suggesting that calling Peugeot customer care may be a successful route. Just over a week after raising the case they have now confirmed that they will take over 100% of the part cost and 35% of labour and it sounds like this will apply even if the tank replacement isn't the end of the story, as they can't properly test the system before it's replaced. My car is now 6 1/2 years old and has just under 32,000 miles on the clock (it had the new style cap fitted under a previous owner). They initially offered 67% of the part costs only, even without full service history, but my local dealership pushing for more and providing proof of service history pushed the percentages up a lot. That is with the service carried out by independent garages, in the case of the last service just signed and dated, no stamp with contact details. I can't believe how lucky I've been and hope the problem will be fixed now. I hope this post may help others.
I bought a Peugeot Partner second hand in January 2021 ('65 plate), with 23,000 miles on the clock. The engine management light came on in April 2022, no one new what was wrong, apparently an emission fault. Four trips to two different garages later I was non the wiser. In early June the UREA light came on (despite a full AdBlue tank), just as we were due to go on holiday. I booked the car in with the local Peugeot dealer (earliest date four weeks later) and had to hope for the best, the light going on and off, going into limp mode a couple of times during the holiday. Eventually the diagnosis was a new tank at £1500 plus diagnostics at £138. That's when I read just about every post available on the matter and came across one suggesting that calling Peugeot customer care may be a successful route. Just over a week after raising the case they have now confirmed that they will take over 100% of the part cost and 35% of labour and it sounds like this will apply even if the tank replacement isn't the end of the story, as they can't properly test the system before it's replaced. My car is now 6 1/2 years old and has just under 32,000 miles on the clock (it had the new style cap fitted under a previous owner). They initially offered 67% of the part costs only, even without full service history, but my local dealership pushing for more and providing proof of service history pushed the percentages up a lot. That is with the service carried out by independent garages, in the case of the last service just signed and dated, no stamp with contact details. I can't believe how lucky I've been and hope the problem will be fixed now. I hope this post may help others.
Hello,
Thanks for putting up your recent post around the urea sensor. I was really hoping you could help with some of my questions as my situation seems close to yours.
I bought a 2016 Peugeot 308 which now has the same issue. I bought this from a private dealer, did you do the same or was this from a Peugeot garage?
Was the diagnosis at a local garage or an actual Peugeot dealership?
I ask as I wonder if they will reject the request for compensation as a known issue if its not from a Peugeot dealer.
Appreciate your help if possible.
Thanks!
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Hi there, No, I bought mine from a non Peugeot dealer, so I don't think is matters where you bought it. The diagnostics were done at Peugeot, though. It costs a fair bit (£138), but that way customer care accept the diagnosis and can then directly get in tough with the Peugeot garage. It does help to have a full service history. Whether they help and by how much seems to vary a great deal, I was told I was very lucky getting this much with a '65 plate, but I know others have been similarly successful. Give it a go, there's nothing to loose. Good luck!
I removed that membrane crap 2 years ago, no problems.Seems the membrane on the cap is ventilated, or at least semi-permeable. My mistake.
High performance sealing membrane for AdBlue® fuel tank cap
Little part with a big effect: Sealing membrane made from Permeaflon®
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I removed too and after I removed blue cap and big black cap...
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Hi all. I have a 2018, 2008 1.6 with only 30k miles and am having all the issues listed in this thread.
Already replaced the Ad Blue injector in Feb (cost me £250) and now being told urea tank and Nox sensor needs to be replaced now too.
It's with a dealership that are connected to Peugeot and they have said they think Peugeot will contribute as much as 92% towards the cost of new tank, however nothing towards the cost of Nox sensor.
So best case I'm looking at around £700 and worst case (if Peugeot don't contribute) looking at £1800.
Should I be content with this potential 92% contribution towards tank and 0% towards Nox sensor or should I be pushing this further with Peugeot? And if I should be pushing this can anyone help with relevant contact information to do this as well as any advice on what I should be asking.
Advice is very much appreciated as a potential cost of £1800 is stressing the hell out of me to be honest.
Already replaced the Ad Blue injector in Feb (cost me £250) and now being told urea tank and Nox sensor needs to be replaced now too.
It's with a dealership that are connected to Peugeot and they have said they think Peugeot will contribute as much as 92% towards the cost of new tank, however nothing towards the cost of Nox sensor.
So best case I'm looking at around £700 and worst case (if Peugeot don't contribute) looking at £1800.
Should I be content with this potential 92% contribution towards tank and 0% towards Nox sensor or should I be pushing this further with Peugeot? And if I should be pushing this can anyone help with relevant contact information to do this as well as any advice on what I should be asking.
Advice is very much appreciated as a potential cost of £1800 is stressing the hell out of me to be honest.
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