Technical Ducato P0401 P0402 P0236 P0238 and limp mode its 2017 Euro 6, EGR changed, What do I check next

[theoneandonly]

@Masztiff
at the top of this page is a menu strip This is Forums click on Guides

At top of Guide is a tutorial on using MES click on that.
there is a an example page of Parameters that can be used as a template to be reused easily. on the second page is an updated group of parameters. Dont forget to save the data by exporting it. Use that and post the csv file here or send a pm. The graph page on MES doesnt show sufficient info. If you can do a run from cold and 10 mins after its warm that would be fine.

 

[Fredastaire]

@theoneandonly can you answer the question for @Masztiff for the parameters to monitor and perhaps get him to send you the CSV file to comment on?

 

[theoneandonly]

Fred
If you are on your phone you might not be able to see the post above yours. It describes how to get to a tutorial to use mes for this purpose. The latest example template is on page2 of the tutorial.
Ps We are in contact.

 

[Masztiff]

Hello
Here my yesterday 10 Minutes log.
The Injector correction fine ?
Low egr Temp ok ?

 

[Fredastaire]

@Masztiff I hope @theoneandonly can have a proper look, I've just viewed figured on my phone. I rather think something is totally odd with the LP EGR temp as it's static. Iether the temp probe is faulty or the cooler is totally totally blocked. Maybe go to the van in the morning with the engine having been cold from overnight, without starting the engine see if the temp shows an ambient reading. This might prove if the temp sensor, (or wiring), is faulty.

 

[theoneandonly]

@Masztiff
here are graphs from all results including those i had to translate first (google)

Analysis
DPF sensor values moving towards the high side , a blocked dpf showed 200 to 300mbar spikes down to 60 after cleaning
LPEGR Temperature is lowest ive seen or reported, valve opening fully. Blocked filter?

HPegr opening lower than most a problem?
Injector variation out of spec
the second set of injector values are really suspect and need repeating (not bothered to show results).
Masztiff could you check the settings of units in MES.

 

[Masztiff]

@Masztiff I hope @theoneandonly can have a proper look, I've just viewed figured on my phone. I rather think something is totally odd with the LP EGR temp as it's static. Iether the temp probe is faulty or the cooler is totally totally blocked. Maybe go to the van in the morning with the engine having been cold from overnight, without starting the engine see if the temp shows an ambient reading. This might prove if the temp sensor, (or wiring), is faulty.

I make just now from cold start new data logging.I upload within one hours here.Thanks for the help

 

[Masztiff]

@Masztiff
here are graphs from all results including those i had to translate first (google)
View attachment 407300View attachment 407301View attachment 407302View attachment 407303View attachment 407304View attachment 407305 Analysis
DPF sensor values moving towards the high side , a blocked dpf showed 200 to 300mbar spikes down to 60 after cleaning
LPEGR Temperature is lowest ive seen or reported, valve opening fully. Blocked filter?

HPegr opening lower than most a problem?
Injector variation out of spec
the second set of injector values are really suspect and need repeating (not bothered to show results).
Masztiff could you check the settings of units in MES.

Bad news for me.Injector fault in 30.000 Km engine. And lp Egr Block.
Thany for reply now i upload today log from cold engine start.

 

[Masztiff]

Today log with cold engine.I worry about my engine fault.

 

[Fredastaire]

Question.
What software version have you running? (MES shows it). Most vans are on the latest 0032, 'the one and only' is on 0028.
.
We understand that the latest may be critical to best operating with our problems.
.
Might be an idea to change to the high spec diesel and additive for injectors cleaning.

 

[Masztiff]

My software version: 0032
How fault my injectors after 30.000 Km ?
The faulty injectors cause the problem ?
Yesterday drive in city and long ways with 450 km: No stored Fault
Today i start the car and drive 10 Km with data logging.Under make log the p401-61 fault code come up.

 

[theoneandonly]

My software version: 0032
How fault my injectors after 30.000 Km ?
The faulty injectors cause the problem ?
Yesterday drive in city and long ways with 450 km: No stored Fault
Today i start the car and drive 10 Km with data logging.Under make log the p401-61 fault code come up.

Could you do a screen shot of the P401. the freeze frame data will tell me when it occured so can search for any anomalies
heres the injector variance . again out of spec whether a clean with Liqui Moly Diesel purge will help or its new injectors, i dont know. details on cleaning see this thread

Ducato DPF errors | FIAT Ducato

I tried to do this but was unsucessful in starting engine pherhaps bottle was too low. I ended up just putting it in the fuel tank.

www.fiatforum.com

 

[Masztiff]

Could you do a screen shot of the P401. the freeze frame data will tell me when it occured so can search for any anomalies
heres the injector variance . again out of spec whether a clean with Liqui Moly Diesel purge will help or its new injectors, i dont know. details on cleaning see this thread

Ducato DPF errors | FIAT Ducato

I tried to do this but was unsucessful in starting engine pherhaps bottle was too low. I ended up just putting it in the fuel tank.

www.fiatforum.com

View attachment 407312

I clear the code unfortunately.So the 1 and 4 cylinder injector bad.

 

[Masztiff]

I clear the code unfortunately.So the 1 and 4 cylinder injector bad.

This Picture Help for search the fault time ?

 

[Masztiff]

This Picture Help for search the fault time ?

If the operating time true. The fault around 600 sec come up.

 

[Fredastaire]

It shows the usual fault where actual air is approximately 1/4 of requested air.
.
None of knows why this error happens.
.
The requested air is a stupid high impossible figure.
.
Something is triggering a calculation in the software which cannot ever be reached- so what is it?

 

[Masztiff]

It shows the usual fault where actual air is approximately 1/4 of requested air.
.
None of knows why this error happens.
.
The requested air is a stupid high impossible figure.
.
Something is triggering a calculation in the software which cannot ever be reached- so what is it?

So What can we do ? What is the opinion about Egr Valve Stuck ? The Local Fiat say to me stuck my Egr Valve.On the log everything fine with Egr Valve.These Problem cause bad Fiat Ecu software ?
If yes what happend when go to Pro Chip tuner ?

 

[Fredastaire]

I 'know' an engineer mechanic who works in Hungary. They were struggling with 4 Ducatos with the 401 fault, they have replaced the cooler on all 4 and the codes have not re-appeared. This person is not a member here.
Bob on here has replaced his dpf and cleaned his cooler, so far he has no fault code.
Regarding the action of the EGR, I can only comment on the HP one which I've had partly in bits. They have an electric servo motor to push open the valve, it has a feedback system so you can see if it's actual movement matches it's instructed movement. This is all very well but say the valve was stuck fully open, the motor could open and retract apparently all ok.but of course you don't know if it was stuck open.
.
I'm just working on the principle that it's the cooler filter gauze that is partially or fully blocked that causes the fault.
.
The LP EGR as I've stated before is a composite device in that it has a butterfly throttle to reduce the clean air from the air filter so as to form a mixture of clean and dirty air. I think that with a blocked filter gauze that the action of the butterfly strangles the turbo infeed and hence the ecu cannot make a successful calculation so it throws the code.
.
The blocked cooler filter shows as low temperature of the cooler temp sensor.
.
Mine can show 90-100 degrees when open and foot down, there are others who have lower temperatures and one who has no temp change when the EGR opens.
.
We need to find a way of squirting cleaner up inside the cooler to disolve the blockage.
.
Then comes the question of what causes the sooting? In some cases it's clearly the faulty injectors.
.
I permanent used the expensive diesel inc cleaner additive, my injectors appear to be ok at this present time, I've no idea if they were faulty before I started my fuel regime.
.
I've run out of comments tonight......
.

 

[Masztiff]

I 'know' an engineer mechanic who works in Hungary. They were struggling with 4 Ducatos with the 401 fault, they have replaced the cooler on all 4 and the codes have not re-appeared. This person is not a member here.
Bob on here has replaced his dpf and cleaned his cooler, so far he has no fault code.
Regarding the action of the EGR, I can only comment on the HP one which I've had partly in bits. They have an electric servo motor to push open the valve, it has a feedback system so you can see if it's actual movement matches it's instructed movement. This is all very well but say the valve was stuck fully open, the motor could open and retract apparently all ok.but of course you don't know if it was stuck open.
.
I'm just working on the principle that it's the cooler filter gauze that is partially or fully blocked that causes the fault.
.
The LP EGR as I've stated before is a composite device in that it has a butterfly throttle to reduce the clean air from the air filter so as to form a mixture of clean and dirty air. I think that with a blocked filter gauze that the action of the butterfly strangles the turbo infeed and hence the ecu cannot make a successful calculation so it throws the code.
.
The blocked cooler filter shows as low temperature of the cooler temp sensor.
.
Mine can show 90-100 degrees when open and foot down, there are others who have lower temperatures and one who has no temp change when the EGR opens.
.
We need to find a way of squirting cleaner up inside the cooler to disolve the blockage.
.
Then comes the question of what causes the sooting? In some cases it's clearly the faulty injectors.
.
I permanent used the expensive diesel inc cleaner additive, my injectors appear to be ok at this present time, I've no idea if they were faulty before I started my fuel regime.
.
I've run out of comments tonight......
.

I contact with these engineer.He send for me some useful information and try to help on telephone.The bad thing my injectors in 1 and 4 cylinders didnt work good. (Mes logging corrections).

 

[Masztiff]

I contact with these engineer.He send for me some useful information and try to help on telephone.The bad thing my injectors in 1 and 4 cylinders didnt work good. (Mes logging corrections).

Thank You so Helpful Informations.I try first the liqui moly injector cleaner.Then i log my injectors : work or not.If yes go to mechanicher and clean the egr and egr coolers.If the probem not solved i try out programming the egr system.If egr didnt work the mot swimming out ? If agr off and dpf on the enission still ok or not ?