Help please! Blocked DPF issues.

[amb03]

Hi all,
As the thread suggests, I’ve got the coil light and Engine management lights on - so in limp mode. Carista is stating 60grams of soot and won’t perform a forced regen. These are the faults showing:

I have removed the DPF from the vehicle and used wynns off the car DPF cleaner, reinstalled to the van and I’ve still got the same issues/codes.
The codes also reappear immediately when cleared without the engine running. Does this suggest a sensor issue?!
Please help!!
T6 2017 150bhp engine.

Andy

 

[mmi]

Any back story?

Adapting ash mass to zero in the ECU should allow to clear the 23902 fault and then perform a forced regen. However, I don't think Carista can do that.

 

[amb03]

Evening, only back story really is that it’s gone from my daily commuting van (40mins on motorway) to worst case scenario, 5 min picking up kids from school once or twice a week.
I can’t recall it ever trying a regen whilst driving, so the soot seems to have built up without warning.

 

[mmi]

No fuel low warning light on dash? No DPF light on dash at all?

 

[amb03]

Occasional low fuel, but no dpf light.

 

[mmi]

I can’t recall it ever trying a regen whilst driving,

On a healthy engine while driving it's almost impossible to know when the regen is happening.

Anyways, behind the fault code there should be a lot more data recorded, including when the last regen was.
What does the "More data" button on Carista show?

Spoiler: VCDS 23902

23902 - Particle Filter
P2463 00 [10100011] - Excessive Soot Accumulation
MIL ON - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 79049 km
Date: 2063.01.15
Time: 13:28:22

Engine RPM: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 33 C
Intake air temperature: 16 C
Ambient air pressure: 960 mbar
Voltage terminal 30: 12.273 V
Unlearning counter according OBD: 40
Counter for regeneration time of particulate filter: 0 s
Particle filter: kilometers since last regeneration: 35.7
Particle filter: soot mass measured: -1.98 g
Particle filter: soot mass calculated: 40.18 g
Particl.filt.: differential pressur.sensor 1 bank 1: dyn.offset: 1.5 mbar
Particle filter: field regeneration lock status: 8

[Courtesy of 2018 VW Transporter Kombi coil light and limp mode]

 

[amb03]

Carista isn’t great for more information unfortunately…..

 

[mmi]

Carista isn’t great for more information unfortunately…..

Is that all - I was hoping to see further down - "Particle filter: kilometers since last regeneration"??

 

[amb03]

Nope, further down is just voltage of battery, which is a little low but I’m aware of that. Carsita is ok for tinkering but not great when you need to delve deeper!

 

[Toffermora]

The vag dpf app will show you that info and uses carista to get it's info, you could try downloading that and trying it

 

[DXX]

Nope, further down is just voltage of battery, which is a little low but I’m aware of that. Carsita is ok for tinkering but not great when you need to delve deeper!

Carista beta shows km since last regeneration.

 

[amb03]

Is it unusual that the fault code appears back immediately after clearing when only the ignition is on? I would have thought the engine needs to be running to get pressure readings across the dpf to determine soot levels? Does this suggest sensor issues?

 

[amb03]

Carista beta shows km since last regeneration.

Is the carista beta further info (last dpf regeneration) in the debug info that it performs? I can’t seem to access that? When I perform the usual service menu-dpf regen etc it shows the same amount of detail as the non beta app?

 

[DXX]

Are you on a paid subscription?

 

[amb03]

Are you on a paid subscription?

Yes

 

[amb03]

Found it, it’s in the live data, I was looking in the service info!!

 

[roadtripper]

For reference my 6.1 regenerates around every 180-200 miles (about 70% dual carriageway 30% local)

28 hours seems implausible on the face of it as this thread has been going on longer than that - I can only assume that's the last time the conditions for a regen were met but it was not attempted due to the soot level?

 

[amb03]

For reference my 6.1 regenerates around every 180-200 miles (about 70% dual carriageway 30% local)

28 hours seems implausible on the face of it as this thread has been going on longer than that - I can only assume that's the last time the conditions for a regen were met but it was not attempted due to the soot level?

I took the 28 hours as being engine running hours rather than say yesterday at 7.40am?

 

[yeha]

How blocked was the dpf when you had it off the van? Had an Audi A6 3.0 quattro dpf that a filled up faster than it emptied with a hose pipe. No idea how it even managed to run the engine at tickover. Only thing that worked was having it properly cleaned.

 

[roadtripper]

I took the 28 hours as being engine running hours rather than say yesterday at 7.40am?

That's a much more likely (and obvious!) interpretation - does that fit with how you use the van?