Ea288 2.0tdi crlb dpf system non adblue

[N871BUD]

Unless i understood wrong from his post he refers to the connection between cat and actual dpf. my dpf is welded as one unit, some can be separeted like your picture here:


dpf with clamp edit.jpg

some can be split in 2-3 pices yellow marked clamp is what i am on about. my one does not have that, would of made i think taking it off the car cleaning etc much easier.
dpf to install.jpg

[Crasher]

What is the VIN?

[Ben_T]

What a bummer. It's excruciatingly difficult re-assembling on the car anyway, so as long as you can get the complete unit in/out you'll be fine. The section from the DPF that connects to the front downpipe really gets in the way. It's a good idea to loosen and remove ALL of the sensors on the system before you unbolt the system from the block as they also get in the way and snag on things during removal. Once the system's free, even off the car, getting enough torque on them to crack them off's very difficult (impossible for me). Hopefully you'll have more space to work with on your Superb than I had on the Octavia...

And I don't think you need to reset anything after DPF replacement - I reset the oil ash level on mine because I had VCDS and I could, but it's not like the old PSA systems that would flash up a warning light when the mileage limit was reached. In any case, I think the oil ash mass is calculated from VW's oil usage estimate rather than an actual measurement. Mine's showing 0.1 grams of ash after 3,000 miles, but the car's used 1.5 litres of oil in that time so should really have 10 grams or so in it...

You might notice it regenerating almost straight away after replacement - the ECU calculates the soot mass in the DPF based on the measured back pressure. It also estimates the soot mass based on mileage since last regen. It regenerates whenever either one of these exceeds 20 grams on my car. So it might already be "planning" one and might ignore the new lack of back pressure!

Best of luck!

[N871BUD]

I think you have more of one problem than cleaning the dpf 1.5 liters in 3000miles is very close to the teritory of excesive oil consumtion and pretty abnormal for this engine. You should look into were that oil is going maybe ? leaking externaly? maybe turbo leaking a bit of oil? as if it gets burned or torbo is letting by oil exhaust side you will end up cleaning the dpf way sooner than you think.


Did not have a issue with the sensors to take them off the replacement and also today from the one in the car... but wheater was not really with me today and do to the rain i wasted most of the day till afternoon as rain was on and of.

din manage to get the subframe off and away from the car while car on ramps with rear wheels and front on axle stands, it needs as minimum of 400mm clearance under front bumper and front jacking pointsand wheels off otherwise will be very hard to move away from unde the car the subframe and be able to leave stearing rack and still be able to move. once subframe with suspension wishbones and driveshaft driver side seems to be ok to acces the assambly and remove whatever else needs removing... tho i stumbled on getting off the bolt in the midle off just above the the downpipe lighting was becoming a problem so i will see in the morning to get that out and take it completly of the car and starting putting everything back together...

[N871BUD]

What is the VIN?

are you after my vin or octavia' s vin?

[Crasher]

The Octavia, I think…

[N871BUD]

I am glad that is over... cleaned dpf on, everything back together but with bit of hadaches as to align back on the car the subframe/crossmember while on axle stands is not really straightforward as it may seem. Cooling system bled and soot adaptation done with vcds but i cannot do the ash adaptation or have any option to tell the ecu the dpf was changed...differential pressure on dpf is 6-7 mbar on idle and 28 at 2500rpm as before was about 12 on idle and over 80mbar even after regen.

Am i missing something in regards to reset the ash values with vcds or i need another tool?

[Ben_T]

Many congratulations on getting it all done, and so quickly too! On my VCDS at least, resetting the soot content also reset the ash content at the same time - perhaps check yours and see if this is the case for you too? I don't think there's any need to reset the ash content anyway, except for your own satisfaction.

And yes, oil consumption's at 1 liter per 1,800 miles now (rising to 1 litre per 1,000 miles if I put Castrol Edge in!!). That's at 150k miles on a CUPA TDI 184. It's definitely burning it (exhaust fumes stink of oil on acceleration) and the turbo/inlet are as dry as a bone. Seems to be a problem with the oil scraper rings clogging on this engine; the oil drainage holes are tiny and seem to get clogged with soot. I'm going to try putting some ring cleaner jollop through the glow plug bores and set up a new thread on it if it works...

[Roverfan]

You had the same fun I did. Cleaned dpf on last Tuesday after noticing excessive regens every 100 or so city miles with 98g+ of ash and more pressingly P0403 not going away. Not changed any of the settings yet..want to to see if it delays regens or not..so far it's over 200 miles since last regen. So it looks like it doesn't rely on calculations as much as the pressure sensor live data, at least whilst all is well. Measured soot was showing minus figures but it's at around 2.8g now.

[N871BUD]

I done on the car adaptations for differential presssure sensors for particulate filter and for low pressure egr (my whole low pressure egr and cooler got replaced few months back); exhaust flap, egr and adaptation for soot

For some reason i cannot do: IDE 07903 adaptation for ash mass. I go into the menu and i get error security acces required, once i put in 17575 which was accepted tho vcds was hinting to get 12345 into security but that is not accepted, i still get the error.

Did not manage to look more into it last night as laptop was drained, but i will tonight.