MarcoWuerttemberger
Member
Numbers DPF and AGR Cooler with parts for install..ordered at Augustin Group Germany ( official Fiat Spare Part Dealer) for 130 HP Ducato Manual Transmission
So I'm having my DPF replaced this week, so it would seem some of us had DPF failure due to faulty manufacturing, rather than a software issue?....I just picked up my Ducato. It runs like hell. Unfortunately, the workshop couldn't install the V32 update. Four attempts were made, but the car wouldn't start. However, the workshop looked at the differences to version 28 and then adjusted the maps of version 28 to match those of version 32. The following differences exist: In the lower and partial load range, the injection quantity is lower in the 32 version. This means the engine runs somewhat leaner. Due to the reduced injection quantity, the Ducato produces fewer emissions and the injectors are protected somewhat.
Regarding the incorrect MAP sensor, the workshop manager said that it could be that Fiat had installed different batches. But any normal workshop with access to the Fiat parts list based on the vehicle's The chassis number can tell you which sensor should be installed.
Probably a combination of everything...the official procedure from Fiat is new injectors, DPF and EGR cooler + version 32.So I'm having my DPF replaced this week, so it would seem some of us had DPF failure due to faulty manufacturing, rather than a software issue?....
New DPF ,new cooler ,I've been on v32 for a year now , so if it happens again...then I think I'll admit defeat and buy a 20 year old sprinter ,can fix them with gaffer tape and a hammer!!!!Probably a combination of everything...the official procedure from Fiat is new injectors, DPF and EGR cooler + version 32.
How do I explain this to myself ? Software 28 kills one ore more injectors over time (Injection quantity no longer fits correctly), leads to a broken DPF, particles clog the cooler, and then errors.
I also looked at the removed sensors...they were pretty sooty and black. So they weren't providing correct readings anymore.
Is there anyone who has experienced problems again after a Fiat repair? That is, they replaced these parts and received a software update?
Of course, it could also be something else entirely. I'd like to explain it this way so I can finally have some peace and enjoy the camper.![]()
If you do have a solution to the problem, please share it here. That is what this forum is for.Witam mam rozwiązanie waszego problemu z błędem P0401 i P0402 w fiacie Ducato 2016+/2020 jestem mechanikiem z Polski 100% działa. Wysyłam instrukcję krok po kroku nic nie trzeba zaślepić, wycinać, usówać itd wszystko w oryginale zostaje. Piszcie na priv
I have no idea what the difference is between the SW versions, but I do know that when I presented at my local FIAT PRO dealer with that Service Note in hand, he demanded where did I get that from!? He also said it is needed and did the update at no charge to me - said it was covered by FIAT. Nice guy. I would think the MAP sensor has a major influence as it part of the feedback control for the motor - Turbo control etc - so if it malfunctions, the effect would be immediate and apparent. You may well be right regarding suspect DPF's but we will probably never know. Stellantis is such a wonderful company!So the last few posts seem confirmed a few more facts, correct me if I'm wrong?
V28 and v32 don't seem to be extremely different on how ECU controls running of van , some corrections to fuel etc , the MAP sensor is not a massive influence on engine running!
So it seems to all point to a defective batch of DPFs , which then start a chain reaction of damage to engine by clogging up sensors and air induction routes that affect injectors, eventually causing massive repair bills .
Which Fiat posted a service note to dealership, but never made it public knowledge.
Some nice photos there. With those and the collected data i can say you have not got a cracked dpf/ blocked lpegr cooler.I checked the car for LPEGR problems.
My car Fiat Ducato January 2018 150hp 40K Soft ver 025
I have no problems with errors 401 and 402.
However, I have another problem. On a cold engine, on low and medium acceleration I have a problem with a momentary loss of power. When the engine reaches a normal operating temperature of 90 degrees, everything is fine.
Sorry for the quality of the photos, I don't have an SD card for the inspection camera yet.
I checked for soot, then I checked the MAP sensor. I unscrewed the Dpf Filter connection to the LPEGR cooler and checked with an endoscopic camera what is visible on the filter and cooler. Then I did a test drive according to the recommendations. I am sending photos and files in the attachment.
Thank you @Jiwawa Don't stress, I was already on it before your recent posts - my response took a while to collate - it didn't just happen overnight. Cheers.@deejays thank you for your very comprehensive post; the technical stuff is beyond me but I wanted to apologise for lifting the 'bad MAP sensor' and running with it - tho I'm glad I did cos it's flushed out your info about it NOT being the problem! I guess I was just so desperate to find a reason for the problem.
If you haven't already, then I suggest you read this entire thread. Yes, it is a lot, but to understand what is going on with a dual EGR motor you really need to - particularly the first few pages.@MarcoWuerttemberger I just spent hours to find guys with the same problem.
Our Fiat Ducato 180 is in Garage since Sept. 2024. They didn’t found the problem yet
They have already replaced the EGR, the MAP sensor and the air filter.
May can I ask which garage you went to or if we could perhaps talk on the phone? I'm really desperate, the garage has been telling us to sell it for months.
We’re from the south of Germany (Freiburg), near Switzerland and France. I would drive anywhere for our Fiat. We rebuilt it for 1 1/2 years for our needs.
It would be really great if you can may help us out.
Thank you in advance und Grüße aus Freiburg![]()