Hi, I bought a Used Fiat Sedici 1.9 Diesel with 59000 miles two weeks ago. After 1 week the Malfunction indicator lamp came on. I scanned it with Multiecuscan and it had error code P1219 Excessive regeneration time.

The DPF showed as 101.8% clogged & the last 5 regenerations as having taken an average of 906 seconds

I thrashed it up & down the motorway in 3rd gear & rescanned & the DPF showed as 14.04% clogged & the average regen time had dropped so I thought that was all good. The p1219 fault was no longer present so I cleared it.

One week & 175 miles later the Malfunction indicator lamp comes on again & this time it is error code p1206 Clean or replace particulate filter. DPF is now 88% clogged. Tried thrashing it again but car went into limp mode.

Before I do a forced regeneration I would like to understand is why it clogged
so quickly & why there was only a p1219 fault when it was 101.8% clogged & a P1206 at 88% ?

Oil degradation level is at 68%

Any advice appreciated

Possibly the EGR valve is stuck open allowing too much exhaust gas back through the system... has happened to previous owners/members.


Please could you say what OBD connector and software you're using to access the ECU as this may help other owners.... + what functions/resets you can do?

you have omitted the temperature readings of the DPF, these are vital but always for some reason forgotten

this is definitely an EGR issue. Get it replaced. Easy and cheap to source from Ebay and easy to fit (i managed to do it). Once that is replaced you'll need to see if you can get it running to regen the DPF. Not sure about that bit as I had to learn by trial and error.

Tell tale sign that the EGR has gone is if the car shudders when you switch it off.

Hi,

Thanks for the tips, will check EGR.

Average temp of last 5 regens before thrashing was 358.96 C after thrashing went up to 512.16 C o last regen was a lot hotter.

The EGR valve may be stuck; remove and give a good clean and ensure piston moves freely then blank off the exhaust side when replacing and ensure electrically connected; may have to clean soot from manifold
see my other posts (marea) re EGR

hi guys, I'm from italy
my car is a 16 1.9 Mjet 8V (120 CV) with 92.000, bought used when it was 75.000 (kms!)
I too have many problems with DPF:
to be short, the car regenerates ONCE by itself and ONCE by forcing regeneration with FES.
It's like a clock, always once and once....
I had to force regeneration cause warning light goes on and ECU goes in protection mode, FES says DPF must be regenerated.
just after normal regen, diff press sensor says 15-18 mbar at idle speed and increases up to 100-120 mbar under load, % of clogging is about 20%
after 500-700 kms diff press says 50-60 mbar at idle speed and increases to 350-450 mbar under load. % of clogging it's about 75-85%.
at this point, warning light goes on, I think caused from high values from dii prss sensor.
I do forced regen, and just after diff press sensor says 15-18 mbar at idle speed and increases up to 100-120 mbar under load, % of clogging is about 50-60%
after 500-700 kms diff press says 50-60 mbar at idle speed and increases to 350-450 mbar under load. % of clogging it's about 95-105%. at this point
THE DPF REGENERATES BY ITS DRIVING THE CAR, and the cycle repeats!!!

I have a steel plate fitted on the EGR with a hole of 10 mm diameter. I fitted it to take out a "seghettamento" around 1800-2000 rpm.

do you think that's the problem? but why there is this strange cycle?

Salve Pagatti,

Possibly the 10mm hole in the blanking plate is still letting too much exhaust gas back through the system.

Please could you say what OBD connector and software you're using to access the ECU as this may help other owners.... + what worthwhile functions/resets you can do?
If you do this I will provide further info to help.

Ciao for now.

chumbamoo said:

Salve Pagatti,

Possibly the 10mm hole in the blanking plate is still letting too much exhaust gas back through the system.

Please could you say what OBD connector and software you're using to access the ECU as this may help other owners.... + what worthwhile functions/resets you can do?
If you do this I will provide further info to help.

Ciao for now.

Click to expand...

chumbamoo: you've got PM

I use FES 3.5.0 with ELM327 cable bought on ebay (the cheaper I've found).
I can read every parameter from the ecu, force regen, reset oil change...

regarding my problem, I will try to clean EGR valve and take out the plate,
somebody also told me it can be a press sensor problem,
but I can't explain why once it works good and once does not work at all.
500 kms ago the car regenerated by itself, today the warning lamp went on....just one good and one not good...

You've mentioned the software can reset the oil change indicator (oil degradation level)... have you tried this first to ensure regenerations aren't being delayed?
Don't forget you should change your oil if you do this.
A common DPF problem occurs when the engine oil is changed by an independant garage that does not realise the timer should be reset. Over time/mileage+driving style the ECU calculates the purity of the oil + if it is safe to regenerate. Failure to reset the timer causes fewer DPF regenerations resulting in a clogged DPF.
Regenerations must occur when the engine is at full running temperature... continuous short trips will eventually cause the DPF to clog.

If the degredation level has been reset it could be a fault with the EGR valve as you mentioned the "seghettamento" stuttering at just under 2000rpm. This seems to be the first sign the engine is being choked by excessive exhaust gasses which then choke the DPF prematurely before the next regeneration is allowed.
Hopefully the valve will only need to be removed + cleaned + replaced.

We had the same problem with our Sedici Multijet and as fellow members suggested, cured it temporarily by fitting a solid blanking plate to stop the gasses passing through the engine + choking the DPF but be warned... fitting a solid plate will probably trigger a fault light.
The 10mm hole in your plate is designed to allow reduced gas flow without triggering the light.

It is not recommended to fit a solid blanking plate without having a DPF removal + ECU remap as the reduction in re-cycled gasses can cause an increase in combustion temperature.... with a clogged DPF this could be damaging.

There are garages in the UK that specialize in DPF removal + ECU reprogaramming to remove + cure all DPF/EGR issues from diesel engines permanently. The cost of this is cheaper than the cost to replace a DPF. Suggest checking your countries emission rules though.
Here is a good link to read https://www.fiatforum.com/sedici/293162-flatspot-hesitation-kangarooing-stuttering-egr-fix.html if servicing the EGR valve by yourself.

I believe Fiat are aware of the flaw in their design as the new replacement Multijet diesels have the DPF's beside the engine to help raise the temperature.

Buona fortuna

chumbamoo said:

I believe Fiat are aware of the flaw in their design as the new replacement Multijet diesels have the DPF's beside the engine to help raise the temperature.

Click to expand...

Thats not a flaw, thats just progression. Cats where moved to the manifold for faster warm up and better emission limiting performance and DPF is the same which is why Fiats are good on emissions. A lot of companies are adopting the cat/DPF one unit combination for these reasons, however if your going a mile to the shop for a paper putting the DPF will make no difference...getting a push bike will though

dear all, today fault lamp went on, attached FES and values are followings:
diff press sens >50 mbar at idle (it's high, when dpf is "not clogged" is 17-18 mbar. Error was due to DPF clogged. (in effect FES says that diff press sensor has sent to the ECU a value incompatible with other parameters)
% of clogging was only 47% (very low). Car was coming from a spontaneous regen.
kms from last regen (spontaneous) was only 500
Maybe I've understand why in next 600-700 the car will regenerate by itself (this evening I'll do forced regen).
If you know italian, there is a tecnichal paper that explains very well, if you want, i can put the link (now I can't, I've to post 5 messages....):
the % of clogging is CALCULATED and the value depends on the guide profile.
I think in my situation (with the drilled plate on EGR), a high mass of exhaust goes into FAP instead into engine, so this increases FAP clogging.
But after a forced regen, since the value of clogging drops down only to 40-50%, diff press sensor and % of clogging are coherent, so the car works good.
After a spontaneous regen, % drops down to 20% but it is increased according to calculation. ECU doesn't know I have a plate on the EGR, so increasing is due only to guide profile. In reality, DPF is clogging faster so you will find in a situation in which diff press sensor are high due to clogging, but % is low due to calculation.
The tech paper explains that diff press sensor is tha one that makes warning lamp to go on. The car doesn't regenerate sponteneously just because % is low.
This is the only explanation I've found on the fact that spontaneus regen does not happen everytiume but ONLY ALTERNATIVELY with forced regen.

what do you think about this?

Think your saying... the ECU will not regenerate just because it needs to as it is programmed to follow a certain interval/routine. Your DPF (FAP) is clogging too quickly due to too much exhaust gas being put through it and you are having to force regen to stop the car entering limp mode???

(This is commonly caused by the EGR valve clogging/failing/sticking in the open position.)

chumbamoo said:

Think your saying... the ECU will not regenerate just because it needs to as it is programmed to follow a certain interval/routine. Your DPF (FAP) is clogging too quickly due to too much exhaust gas being put through it and you are having to force regen to stop the car entering limp mode???

(This is commonly caused by the EGR valve clogging/failing/sticking in the open position.)

Click to expand...

i do not understand what you mean, but it's true: I have to force regen to avoid warning lamp going on (the error in the ECU is always DPF clogged)
yesterday I take off plate and cleaned EGR (it was not so dirty..)
In my opinion the plate causes DPF to clog faster than calculations made by ECU about % of clogging
I'll let you know...

What is the oil degradation level showing?

chumbamoo said:

what is the oil degradation level showing?

Click to expand...

84%

3 years ago I had severe DPF problems.

Best solution in my opinion is to close off the EGR valve with a steel plate, remove DPF filter from exhaust and re-program the ECU to remove the DPF cycle.

After this the DPF problem was solved - plus the flat spot at 1,800 to 2,000 rpm was eliminated.

As a bonus your fuel consumption will also decrease.

I know this! but my aim was to understand why regen happens only once!

How's it going Pagatti?

Has it gone into limp mode yet since removing the plate + are you sure the DPF is salvageable??

There's a thread that talks about Fiat Forum members physically removing the DPF and flushing the internal filter with a specific cleaner.... due to the filter becoming too clogged for successful regenerations!
This is a service also offered by specialists.

This may explain why your DPF clogs prematurely before the next regeneration is allowed and why reducing the recycled gases helps to eliminate the stuttering. (blanking plate on EGR valve)

hello all.

i am getting the same scenario as Pagatti

constantly getting error p1206 , and very low clogging count...

i also have the EGR blanking plate with a small 9-10mm hole.

occasionally i am getting an EGR error also.

any ideas on the fix?

thanks