This is about my Peugeot (model in signature). I can do some things with a very limited OBD reader, so I am not always in the dark. The P20F6 fault came only with a dash message of 'engine fault, repair needed', otherwise no problems, only the engine light illuminated.
Under the car it was a mess. From the AdBlue injector, all the way to the catalytic converter, it was covered in white. I cleaned it all away, cleaned the injector (not looking dramatic -only a normal amount of soot) and put it back. With camera under car I saw no leaks with engine running. I removed the fault and moved on.
Fault came back next day. I did this 3 times and it always comes back after some time. Maybe x amount of starts, or kms? Still have not found any leak. Today I took it to a Citroen garage. They also found nothing, except my wallet.
My scanner still gives failed emissions tests; NOx Catalyst Monitor Bank 1. So I am pretty sure tomorrow I get the same engine fault back. Mind you, the problems started in deep freeze temperatures (weeks and weeks of non-stop day and night between -10 and -28 degr) and now I finally have mainly temps above zero.
My Q: should I try a new injector? Or do I test this one somehow? How would that be? Anything different I could do myself?
Let's see if I can attach some pics now....
2018 Partner Tepee 1.6 BlueHDi 100
2011 Berlingo Multispace 1.6HDi 110 -with a dead engine.
Took the car to town and engine fault came back. No surprise there. On the way back I was stopping at my sauna when I noticed some steam coming from under the bonnet. Opened it and it had a foul smell. That's when I also saw -for the first time- the injector dripping Adblue. About one drop per second, that's a lot.
I wonder this: when and how much Adblue is under normal circumstances injected?
But I'm getting myself a new injector for sure. Any comments on aftermarket parts???
2018 Partner Tepee 1.6 BlueHDi 100
2011 Berlingo Multispace 1.6HDi 110 -with a dead engine.
Took the car to town and engine fault came back. No surprise there. On the way back I was stopping at my sauna when I noticed some steam coming from under the bonnet. Opened it and it had a foul smell. That's when I also saw -for the first time- the injector dripping Adblue. About one drop per second, that's a lot.
I wonder this: when and how much Adblue is under normal circumstances injected?
But I'm getting myself a new injector for sure. Any comments on aftermarket parts???
Boiling urine would never smell great
Please update if you can - sorry I cant help with this.
Took the car to town and engine fault came back. No surprise there. On the way back I was stopping at my sauna when I noticed some steam coming from under the bonnet. Opened it and it had a foul smell. That's when I also saw -for the first time- the injector dripping Adblue. About one drop per second, that's a lot.
I wonder this: when and how much Adblue is under normal circumstances injected?
But I'm getting myself a new injector for sure. Any comments on aftermarket parts???
Where was the injector leaking from? The 1.6Hdi engines are well known for leaking injectors, that just work temselves loose over time and if spotted early enough can often just be cured by removing cleaning up the seat replacing the sealing washers and refitting to the correct torque. Sometimes even just nipping them up can cure the leakage.
After my B9 Multispace [pre Adblue] suffered from a leaky injector which first noticeably caused fumes in the vehicle when stationary, after changing the offending injector [it had a bad carbon build up due to the leakage] I made sure I always check torqued all the injectors every year when doing an annnual big service on my vehicle.
(06-03-2026, 02:32 PM)Multispacer Wrote: Where was the injector leaking from? The 1.6Hdi engines are well known for leaking injectors, that just work temselves loose over time and if spotted early enough can often just be cured by removing cleaning up the seat replacing the sealing washers and refitting to the correct torque. Sometimes even just nipping them up can cure the leakage.
After my B9 Multispace [pre Adblue] suffered from a leaky injector which first noticeably caused fumes in the vehicle when stationary, after changing the offending injector [it had a bad carbon build up due to the leakage] I made sure I always check torqued all the injectors every year when doing an annnual big service on my vehicle.
Hi Multispacer!
It can only leak from two spots, and the connector and clamp is not where that is in my case. You can actually see that when you zoom in on the first photo I attached. It must be from the Adblue hose. Clamp or perhaps hose itself. There's a lot of white crap in and on the miniature heat blanket.
Today I replaced the injector, so I again saw it after the massive leak since the first time I took it off to clean it. Leaking residue in the exact same places. A ton of it...
On the way home I got more fault messages, P20E8 being one of them, but that may be because it spat out so much of Adblue that I may have been low on it. I need to do a longer trip soon to say where I am now with this problem. I added 5L today -all I got. Removed the pesky faults from being visible for now as well. I will keep you updated.
2018 Partner Tepee 1.6 BlueHDi 100
2011 Berlingo Multispace 1.6HDi 110 -with a dead engine.
New injector did not solve the problem. After a day of driving and some starts and stops, today it came back with the exact same fault message. When the car came back (I did not do the driving today) a quick look under the bonnet also showed me the same crystallised white mess on top of the new injector.
After doing some runs tomorrow (car drives fine) I will clean it up and take a look again from below. But I'm not sure where to look now. Googling this fault is also giving very limited results. Seems like not a common issue.
2018 Partner Tepee 1.6 BlueHDi 100
2011 Berlingo Multispace 1.6HDi 110 -with a dead engine.
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