Possible reasons why my van might have stopped doing DPF regens?

[dss123]

Hey all...

So my DPF is now critically full (soot close to 60g, oil ash 85g).

The glow plug light is flashing and the engine management light is on. Significant loss of power.

I can't force a regen... I think the DPF is now too full and I guess the flashing glow plug light is preventing the regen happening.

But my question is......


What might have stopped the regen happening in the first place and allowed the soot to get so high?

I've only recently bought the van (T6 2.0L - 2019). Used quality fuel and only really done long trips. But I have no idea how the van was used before me.

I was aware that the regens were initially happening (smell, fans on at the end of trips etc)..... but now they aren't happening.


One other fault I did detect was a fuel temp sensor... where the cable was pretty much worn through. Now fixed.

I wonder if this fault could have stopped the regen from initiating when required? And now the soot has been allowed to escalate to terminal levels!


Or is my DPF now just at the end of it's service life? 115,000 miles on the clock.

Cheers

Duncan

 

[Dav-Tec]

It's stopped doing regens as it's to full. I can get round this and force it still

 

[Dellmassive]

What engine?

Could be burning oil quicker than the Regen can clear?

You losing oil?

 

[dss123]

What engine?

Could be burning oil quicker than the Regen can clear?

You losing oil?

I guess that's possible? Though I'm not aware of it getting through oil.

Engine is CXHA/2019 R4 2.0L TDI

I'm having the DPF looked at (cleaned?) under warranty... but I don't just want a temporary fix. I'd like to get to the bottom of why the regens stopped happening or weren't doing their job!

I'm also a little worried about possible further damage that may have happened as a result of the blocked DPF.

 

[dss123]

It's stopped doing regens as it's to full. I can get round this and force it still

I tried a forced regen with Carista and it gave me a warning that the DPF was too full, so warned me that forcing a regen had risks. It still allowed me to start the regen.... but nothing seemed to happen, even though all requirements were met. 1/4 Fuel in tank, speed, rpm etc. And Carista still tells me the last regen was over 300 miles ago.

 

[Dav-Tec]

Yeah it'll attempt in but the ECU won't run it I have a way to override this though

 

[dss123]

Yeah it'll attempt in but the ECU won't run it I have a way to override this though

Thanks mate.... I'll see where I get to when I take it back the dealer (still under warranty). I'm guessing they also have the kit to force a regen.

If not, I think they said they could take the DPF off and get it physically cleaned.