Masztiff
Member
Avarage 0.2-0-3 diff
Am I right in thinking you’re showing average regen time of nearly 6 hours?!My dpf values:
No.Around 4 minutesAm I right in thinking you’re showing average regen time of nearly 6 hours?!
Ah ok, it’s cut off on the screen shot where it shows 347.8 m…No.Around 4 minutes
Do you have any soot in the exhaust pipe?Hi all.
Unfortunately I am part of your club too. I have a Ducato 2.3, 2017 Euro 6, F1AGL411D. It has 60K on the speedo, and is running v23 software.
I have battled intermittent P0401, 402, 236, and 238 faults for around 2 years now, from 50k on the speedo.
What I can bring to the forum is a reproducible MIL condition. I get the MIL only in the first 10 minutes of driving. Only at low load, and generally at 80km/h coming off the throttle. I then reset the code, drive it hard for 10 minutes, and the rest of the journey is fine. I can reproduce the fault condition 5 minutes after leaving the house, around 70% of the time.
I have replaced MAP sensor, turbo solenoid, turbo solenoid pipes, and apparently wasted $600 NZD on the HPEGR replacement.
My truck air circulation system is sooted up - see attached photo of HPEGR prior to cleaning / replacement.
I have MES, and note that the fault occurs when the actual turbo pressure is much lower than the desired. This happens when only the LPEGR is supposed to be open. I do not get a large difference between turbo desired and actual pressures if the HPEGR opens to assist the LPEGR, or just the HPEGR is open (where desired and actual track perfectly).
The next thing I was going to change was the Bosch 0281006287 Exhaust Pressure Sensor, although I might hold out to see where we settle with this forum. I'm happy to buy one of these sensors though and change it as part of the knowledge pool, it can just take a month for parts to get down to New Zealand in this post(?)-pandemic world.
Advice is welcome. Truck MIL is currently manageable, and happy to contribute with testing. If there are any specific tests you would like me to perform and track on MES, I can. Its easy to spot when the MIL comes on, as turbo actual pressure immediately drops to atmospheric, and stays there.
Exhaust pipe is black and sooty. The same black soot that was all through my HPEGR, was in the throttle body, and is no doubt all through the intake manifold.Do you have any soot in the exhaust pipe?
Is the exhaust pipe black from inside or clean?
You can test it with a clean white tissue.
If it gets black than there is a problem with the fuel / air ratio or a broken dpf.
Either to much fuel (check injector values) or to less air.
Or blocked / broken dpf (check dpf values, differential pressure, avg. regeneration temp., avg. regeneration km,...)
If the exhaust pipe is clean,
the diffential pressure in idling between 0-15 mbar or under full load 80-125 mbar,
the injector correction values add up to zero and are max. +/-2,
the avg. temp of regeneration over 600C,
the avg. reg. km over 500km.
Than there should be no issues with these components.
You are saying that you get the code in the frist 10 minutes.
Can you check next time before starting the car if the code is already stored.
I've noticed in my case that code was stored in ECU but MIL was still off.
You can get rid of the codes by replacing or cleaning the LPEGR Cooler.
But that's an 6-8 hours job.
And if there is any issue with fuel or air or dpf, the LPEGR Cooler will get sooted again.
You should also update to v32.
Other solution is to delete egr system from ecu.
Therefor you will need someone who can program marelli 9DF ecus.
Wow! Thanks fredastaire for the prompt and helpful reply. I'll do as you suggest and run through some Millers Ecomax Diesel at the next opportunity. I've been put off buying a code reader at that price point because of reviews saying they wont read later Ducato codes - hence my email to Gendan for something compatible but am happy to go with anything you can recommend or see what they come up with. I'll also resign myself to reluctantly migrating my new windows 10 laptop from home to the van and following the Multiscan MES tutorials! Do I need a particular module from Gendan to plug into the van socket?@zakandme now perhaps you are not so frightened about being stuck at the side of a motorway for hours.
You now need to do a full read up on this entire post (I started it) and probably get a friend who has mechanical knowledge to help you understand.
The origins were when the EU brought in stiffer emmission regulations, whilst most manufacturers went to ablue, some others went for a Twin EGR system. Fiat got something wrong with the software which causes the injectors to overfuel at times, the extra soot can block and sometimes ruin the DPF, when it makes it through it then settles on the filter gauze of the LP EGR cooler, once part blocked the engine cannot get enough air, its part strangled so it throws the fault codes(s).
Fiat have developed the software a few times, the latest is version 32 for the engine and an update for Comfortmatic, they also did an internal technical document which some of us have a copy of, they seem to have done a recall probably in some countries, we in the UK didnt get it.
I strongly advise you find somebody with a laptop and that you buy Multiecuscan MES so with help you can interrogate your engine and see where you stand.
Next my advice is to change your fuel to the expensive grade diesel and add something like Millers ecomax (for diesel) so you can give the engine a chance to clean the injectors, now take it for a half hour run at in a lower gear consistant at say 60mph on a dual carriageway / motorway to give the engine a chance to get properley hot and burn itself cleanest.
Now you need that laptop plus friend and MES to interrogate.
Dont at this stage go to any dealer, they will read the fault codes, which will incorrectly say that its the HP EGR thats blocked and they will charge you £600 to replace. The 401 code is totally missleading, its causing owners worldwide to buy an unnecessary EGR. Its actually the LP system which is blocked, not the HP.
got to go just now, ill come back later...
I thought I was going to be out of luck tonight, with no fault codes to deliver.@Bigruss it would be useful if you were to run the following tests, preferably from cold then for 10mins after warm up. And post the csv file here or pm me. Further instructions if required are in a tutorial see guides at top of page.
View attachment 407544