P2463 P246C

[GORAX]

Hello everyone

While driving, errors P2463 and P246C suddenly appeared.

Since I got back from vacation, I've driven short distances more often. Is driving on the motorway the solution to start regeneration of the DPF or do I have to have something replaced in the workshop?

[GiveMeABreak]

That will mean the particle filter, so accelerate with no load to an engine speed of 3000 rpm for 3 minutes. Or go for a good spirited driver in about 4th gear to allow the exhaust gasses to get nice and hot and hopefully a regeneration.

[GORAX]

Diagnosis says that fap life is 2054 km. Do I have to replace the DPF completely or is cleaning enough? Can I reset this counter via Diagbox?

[GiveMeABreak]

P2463 97 and P246C both mean the particle filter is overloaded.

If it cannot regenerate after several attempts because the conditions are not suitable, the it can mean that ultimately, the particle filter will get blocked up. If it reaches a level anywhere 70% or over, it may not be possible to regenerate the filter and it will have to be removed for proper cleaning (an in-place clean with chemicals may or may not work - it all depends on how full and clogged it is).

[GORAX]

and what does FAP life left mean in the FAP app?

[Rp0thejester]

FAP just means how much additive is left to help the DPF burn. It's calculated by guess work. It's not actually a correct amount.

[GiveMeABreak]

and what does FAP life left mean in the FAP app?

FAP is just the French for Particulate filter and it has nothing to do with the additive fluid quantity remaining.

It means in terms of the App, the estimated service life of the filter, based on the estimated amount of Cerine' deposits that have accumulated in the filter since it was new.

The codes mean there's a blockage.

[GORAX]

So after driving on the highway I got the top value down from 33 to 28. The check engine light does not come on. After the trip I deleted the errors and they no longer appear. But it doesn't show any regeneration either. Should I initiate one with Diagbox?

I took the screenshot before deleting the error.

[GiveMeABreak]

The values of the soot in the FAP will go up and down - ignore these as they will fall after regeneration and rise again during normal travelling.

It's saying the vehicle has done 175k KMs on this particle filter so is at end of service life. It's therefore telling you that it has 2k KMs left. It is 39% full of cinders (ash from the soot after regeneration that cannot be burned off, along with engine deposits and Cerine that clog the filter and ultimately require deep cleaning or replacing). So it is almost half blocked according to this with stuff that cannot be burned off during regeneration.

This means the filter is going to try and regenerate more often as the filter is at just under half it's original capacity. So at some point it will need coming off and cleaning or replacing, otherwise these messages will keep reappearing and at some point will cause the engine to go into limp mode.

[GORAX]

Thank you. That explains a lot. Should I use a DPF cleaner to buy myself some time?

[GiveMeABreak]

Your vehicle already has an additive system to assist with regeneration. I can't see how this is going to help as the blockage is not the soot, but the ash left behind after regenerations over the years and that cannot be burned off, so I can't see how this is going to help. Most after-market additives make wild sales claims, but the fact remains that at this stage of the filter's life, it really needs removing and to be physically cleaned with chemicals by a specialist or replacing.

As said, not all DPF systems have a particle filter additive system, so after-market cleaners may assist with regenerating these types of systems, but you already have assisted regeneration. Adding more 'gunk' into an already blocked filter may make things worse as it may just sit in there adding to the blockage.

[Mihael_M]

Hi Gorax ,Your filter probably looks like this.
https://www.autodoc.co.uk/nap-cleanair/ ... ate-filter
Newer models have a filter that has 2 parts and can be disassembled for cleaning. Cleaning is more difficult here. Your solution is to do the cleaning yourself with a DPF cleaner, have specialists do it for you, or finally buy a new filter. I would try with a cleaner. If it doesn't help, then I would ask the specialists who do it how much it costs and what are the chances of cleaning it well.

[GORAX]

Hi Gorax ,Your filter probably looks like this.
https://www.autodoc.co.uk/nap-cleanair/ ... ate-filter
Newer models have a filter that has 2 parts and can be disassembled for cleaning. Cleaning is more difficult here. Your solution is to do the cleaning yourself with a DPF cleaner, have specialists do it for you, or finally buy a new filter. I would try with a cleaner. If it doesn't help, then I would ask the specialists who do it how much it costs and what are the chances of cleaning it well.

And how can I clean it myself?

https://www.fahrzeugartikel.de/liqui-mo ... sonde.html maybe?



https://petec.de/en/products/?prodid=428

I know it's not a professional solution but if it helps me temporarily I would do it.

[GORAX]

A cleaning was carried out without dismantling. 15 liters of dirty water came out. engine runs quieter and better. cost exactly 380 euros.

[GORAX]

Despite successful cleaning, the diagnosis still shows error p2463 but the check engine light does not come on. The only thing I can think of is the differential pressure sensor. Could it be something else? After cleaning, the filter was trained as a new filter and the values ??were reset.