Adblue tank repair details

[Stan93]

Brand Name FLUHANDY
Part no. HM8500J or HM8500F

Hi I just tried to order this pressure sensor and the price has gone up to $55 dollars for one item.
I may start ordering larger quantities and selling them through leboncoin.fr or ebay.fr let me know if there is any interest.

Thanks

[Ceenine]

I was thinking the same thing. I’m in to contribute. I was going to buy 10 or 20. Let me know f you want money up front.
Don

[Stan93]

Hi, Australia is a long way from Europe! Not really viable.
I'm having trouble with the order going to France, as they are said not to have an "EPR (extended producer responsibility)".
Seems a bit odd considering PSA use alot of these pressure sensors.
Thanks for your offer anyway.

EPR (extended producer responsibility) this is laughable, when the Peugeot stickup is 1500 euros for a complete adblue tanks when its likely to be just a failed pressure sensor.
Would be interesting to have some data on what percentage of tank failures are the result of the pressure sensor.

[Ceenine]

Thanks for your response. I will go ahead and source the sensor directly. My process engineer friend says that these sensors are quite sensitive and are prone to failure. They have an important job to do. Apart from the printed circuits, there is not much else to go wrong such as the plastic tank, rubber tubing and other robust hardware. I won’t mention the injector piping function. The fact that some unfortunate owners are on their third Adblue tank is testament to the failure of probably this sensitive sensor. This is an indictment of the modern parts industry.

My rant for the day. I feel so much better now.

Don

[Siddy2408]

Hi, I'm wondering if anyone can help. We've got this dreaded issue on our Citroen Spacetourer 2017, naturally a new tank is not a desirable idea but we're not confident in following this guide to assemble our own pressure sensor system. Is there anything that's a little more "plug and play" that can be done ? We live in a rural area of Ireland and aren't from the area so we don't have a mechanic. Do you think most mechanics would be willing to give something like this a bash?

[Trickiedickie]

Firstly you need to diagnose the actual fault. So somebody has to plug in diagnostics and check the error codes in the ecu.
If the error code is P20E8 then there is a chance of fixing the issue by using one of the 2 methods posted in this thread. Remember, any error codes must be cleared/reset before a fix is applied.
Diagnosis is the key. Good luck!

[Paul-R]

If the error code is P20E8 then there is a chance of fixing the issue by using one of the 2 methods posted in this thread. Remember, any error codes must be cleared/reset before a fix is applied.

At this point in this quite long thread it might be worthwhile to state what these two methods are and, if possible, link to where they are in this thread.

I've been following this thread with great interest and may have to use some of the information before too long although I'm hoping that it's an Adblue injector at fault in out 308 rather than the tank as a new tank was fitted four years ago. I'll create a new thread soon.

[RichardW]

I had already created a thread referencing Stuarts, repair, I have now added a link to TrickieDickie's post as well: viewtopic.php?t=82304

[Paul-R]

That's for the '2cv World Meeting', last post 2005!

[RichardW]

Now fixed!

[Paul-R]

You still have to wade through four pages though. I think we could do with a couple of bullet point highlights.

[Siddy2408]

I had already created a thread referencing Stuarts, repair, I have now added a link to TrickieDickie's post as well: viewtopic.php?t=82304

Thank you.

Firstly yes, we have the P20E8 Error code amongst a whole host of other seemingly Battery Management System Errors but they're unrelated.

I perhaps wasn't clear, we aren't confident in our technical ability to apply these solutions. Non of us are very well trained with cars. The first option looks to complicated for what we can do and I was wondering if an average mechanic would be willing to give it a go.

Then the second solution, doesn't seemingly have a guide, I'm not sure how to actually connect the sensor to the tank, I presume it doesn't just connect into the second half of the tank.

Sorry for my lack of mechanical ability.

[Trickiedickie]

So for the second solution just do the usual...........which would be;
1-Drain tank
2-Drop tank
3-Disconnect Adblue supply pipe
4-Disconnect wiring harness
then
5-Remove pump module from tank unit

At this point there are 2x cable connections to undo and 2x screws. NOTE (these are pentalobe 5 point screws and I didn't have one so I carefully used a suitable sized small flathead screwdriver, easy as they are not very tight) and then you can swap out the pressure sensor for a replacement. Then reassemble and refit the tank to car, refill with adblue etc. It would be a good idea to use Diagbox to reinitialise the adblue system as it runs a test at the same time though in most cases this would not be required if all adblue related codes have been cleared from the system.

The photo shows the multicore white cable connector disconnected from the pcb and the sensor black 3 core connector, both disconnected, and with the 2x pentalobe screws as fitted.

[earlsgate]

Hi, I'm wondering if anyone can help. We've got this dreaded issue on our Citroen Spacetourer 2017, naturally a new tank is not a desirable idea but we're not confident in following this guide to assemble our own pressure sensor system. Is there anything that's a little more "plug and play" that can be done ? We live in a rural area of Ireland and aren't from the area so we don't have a mechanic. Do you think most mechanics would be willing to give something like this a bash?

see my post on page three of this useful thread, which makes reference to a possible fix , advised by PSA themselves in a TSB. You'll find it makes reference to getting resistance values from connectors before deciding if a simple repair is possible. many in the Polish community are working on this way of avoiding expensive tanks or replacing the pressure sensors. An easy job for any worthwhile mechanic or DIYer. There's also reference to tank removal video from Mr O'Reilly. Hope this helps

Personally I don't think most mechanics will want to try these emission systems repairs preferring to make their money from changing components rather than attempting even a simple diagnostic that would be leaving them looking out of their depth but to be fair sometimes with time in short supply you can see why they go down that route. For the DIYer its another matter and a challenge they can entertain regardless of time pressures

[Stuart W]

Simplified explanation of the pressure sensor mod:
My original suggestion for replacing the original pressure with an external sensor is very low cost.(around £30) and in simplest terms you cut off the wires close the faulty sensor and extend them out of the tank cover and connect them to the new 10 bar sensor which you plumb into the adblue pipe from the tank by means of a Tee piece connector.This could be at any convenient point that allows space for the sensor.
In all cases the tank will have to be removed to gain access but the mod itself is very straightforward and allows for a simple and quick future replacement.... if necessary!