DPF Regen Frequency / Issues / Force discussion.

If it's blocked, I 'd say that's the only way to do it.
If it's just sooted up then a regen may help to clear it, but for how long is anyone's guess.
Of course, taking a long drive down the motorway in the present climate may not be possible.
The dealer should be able to give a figure on soot loading from plugging it in to their VAGCOM kit, VCDS will do it as well
 
Grim,

I remember the number 100 floating around and 120 no idea what he was talking about.

Im in warwickshire any recommendations or who i should be looking out for?

thanks in adv
kay
 
If you have a reasonably equipped garage, a decent pressure washer and a little time it should be doable at home.
Places like terraclean and carboncleaning are a no go, google dpf cleaning services and have a look at what each company do, steer clear of any that say they can do it while its still in the car.
The current lockdown might present a problem in getting any work done at the moment.
 
Grim Reaper said:
If you have a reasonably equipped garage, a decent pressure washer and a little time it should be doable at home.
Places like terraclean and carboncleaning are a no go, google dpf cleaning services and have a look at what each company do, steer clear of any that say they can do it while its still in the car.
The current lockdown might present a problem in getting any work done at the moment.
Click to expand...
You got to remove it first, have you tried?
 
Grim Reaper said:
If you have a reasonably equipped garage, a decent pressure washer and a little time it should be doable at home.
Places like terraclean and carboncleaning are a no go, google dpf cleaning services and have a look at what each company do, steer clear of any that say they can do it while its still in the car.
The current lockdown might present a problem in getting any work done at the moment.
Click to expand...

I appreciate you taking the time to help me :)
this lockdown is doing my head in but its for the better good i suppose.
will let you know how i get on.

keep well, speak soon.

kay.
 
Not personally no, but when the time comes I’ll be doing it.
I tried to find a used one to do a pre-clean on so it would be a swap out job but the cheapest I could find was over 300 quid.
 
This is the section from the Ross-tech wiki on using vcds to force a regen.

1.6l/2.0l R4 CR-TDI (CAN)
With the newer CR-TDI engines there are 2 different types of regenerations available depending on the actual soot mass/load. If either the calculated or measured soot mass is above 30g but below 40g you can initiate a regeneration while standing (Idle will be raised etc.), a forced regeneration while driving is also possible. Once the values are above 40g (but below the max 45g) the regeneration while standing is no longer available and the regeneration while driving is the only way.

Regeneration while Standing/Idle
Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Fuel Tank at least 1/4 full
  • Transmission in Neutral/Park
  • Parking Brake engaged
  • Coolant Temperature above 70 °C (see MVB 002.4)
  • Particle Filter Load below Specification (see MVB 108.2/3 -or- 241.2/3 VCDS should give the specified values)
    • If the Particle Filter Load is above Specification the Particle Filter needs to be replaced since the car may burn down when regenerating.
  • Power Consumers ON (Light, Seat Heating, Front/Rear Window Heater, Climate Control)
  • Engine Hood Closed
[Select]
[01 - Engine]

[Security Access - 16]

  • Enter the Code shown by VCDS next to Adaptation Enabling (e.g. Regeneration while Standing)
[Do It!]

[Basic Settings - 04]

  • Select Block for Regeneration while Standing
[Go!]
[On/Off/Next] if Basic Settings isn't automatically ON at the top of the screen.

  • Follow the Instructions on the Screen. This process may take up to 30 minutes.
[Done, Go Back]

Check the following groups after the regen. The Particle Filter Load should be as low as possible (close to 0 %)
[Meas. Blocks - 08]
Select Blocks 099 and 108 at once.
[Go!]

MVB 099.2: Exhaust Gas Temperature before Turbo Charger
MVB 099.3: Exhaust Gas Temperature before Particle Filter
MVB 099.4: Exhaust Gas Temperature after Particle Filter

MVB 108.2: Particle Filter Soot Mass (calculated) Alternate group 241.2 if 108 is blank
MVB 108.3: Particle Filter Soot Mass (measured) Alternate group 241.3 if 108 is blank


[Done, Go Back]
[Close Controller, Go Back - 06]

Regeneration while Driving
Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Coolant Temperature above 70 °C (see MVB 002.4)
  • Particle Filter Load below Specification (see MVB 108.2/3, VCDS should give the specified values)
    • If the Particle Filter Load is above Specification the Particle Filter needs to be replaced since the car may burn down when regenerating.
    • If the Particle Filter Load value in MVB 108 is blank, use alternate group 241.2/3 instead.
  • Power Consumers ON (Light, Seat Heating, Front/Rear Window Heater, Climate Control)
  • Engine Hood Closed
Conditions (Driving Cycle):

  • Vehicle Speed above 60 km/h (40 MPH)
  • Engine Speed between 2000-2500 RPM (4th or 5th Gear, Automatic Transmission in Tiptronic)
  • Duration approx. 10-15 Minutes
  • Exhaust Gas Temperature before Turbo Charger above 170 °C (MVB 099.2)
  • Exhaust Gas Temperature before Diesel Particle Filter above 150 °C (MVB 099.3)
  • Exhaust Gas Temperature after Diesel Particle Filter above 150 °C (MVB 099.4)
Drive the car based on the above Conditions until the Particle Filter Load is as low as possible (close to 0 %). In case the Regeneration fails there can either be problems with the Driving Cycle Conditions or with the Engine Hardware.

[Select]
[01 - Engine]

[Security Access - 16]

  • Enter the Code shown by VCDS next to Adaptation Enabling (e.g. Regeneration while Driving)
[Do It!]

[Adaptation - 10]

  • Select Channel for Regeneration while Driving
[Read]

  • Enter/Save 1 as new Value.
[Save]
[Done, Go Back]

[Meas. Blocks - 08]
Select Blocks 099 and 108 at once.
[Go!]

MVB 099.2: Exhaust Gas Temperature before Turbo Charger
MVB 099.3: Exhaust Gas Temperature before Particle Filter
MVB 099.4: Exhaust Gas Temperature after Particle Filter

MVB 108.2 or 241.2: Particle Filter Soot Mass (calculated)
MVB 108.3 or 241.3: Particle Filter Soot Mass (measured)

Now Start the Driving Cycle and keep watching the Measuring Blocks (2nd Person required).

[Done, Go Back]
[Close Controller, Go Back - 06]
 
I stopped reading any further having read this prerequisite :eek::

If the Particle Filter Load is above Specification the Particle Filter needs to be replaced since the car may burn down when regenerating.
 
That’s not surprising when you see that the dpf inlet temperature has to reach 700deg before it starts!
 
It's worth a very basic explanation of how the DPF works. The DPF traps SOOT in the honeycomb and the regeneration converts the SOOT into a smaller quantity of ASH - see VCDS post above from @Loz . This ASH builds up within the DPF and once a specific quantity of ASH has built up, that's usually the time the DPF needs replacing. As the link above from @Grim Reaper shows, you can remove this ASH from the DPF with a little bit of effort.

It's common for terms soot and ash to be used interchangeably when talking about DPFs however it is important to know which is actually blocking it.
 
Loz said:
>“Does 2000 rpm up the motorway for 10 minutes sort it” I’m presuming that it has to be in regen mode for this to work or can you clear a dpf by just gunning it down the motorway?
You answered your own question, you need to know, the idle is raised and on mine the turbo sounds harsh.
>Also, do you get any lights on to say you are now in regen mode or is it that you just have to notice the smells and fans roaring away?
No lights
>I also have a Ford van where you have no idea it’s in regen mode until you switch the engine off and the fans are on full. If I knew, I could continue my journey down a local bypass to maximise the cleaning process.
Same
Click to expand...
Where is the dpf located on the t6
 
It's the first box after exhaust manifold.
Very close to the gearbox.
Edit: Right after elastic section of the piping.
56065edf41c18efd0d04cb04c4fe.jpeg
 
I drive a lot of short stop/start journeys around town and mine often regens. I used to be concerned but as the dealer reminded me ‘its the system doing what its designed to do’.
If mine frequently regens, as others I simply drive it up the dual carriageway for 15-20 mins in higher revs and it sorts it out.
My light came on about 8 mths ago and as its under warranty the VW dealer took it in for a flush. The light hasnt reappeared again (touch wood). The dealer did say they had done lots of T6’s so Im not alone!
 
I’ve just got my t6. Its an adblu. It’s done 130k. Was told it’s had all done that is needed of those miles. Was fine on it’s big motorway drive home after a couple of short stints in town on comes the light. Had it reset at a garage was fine on a reasonable drive home but now on again after stopping for fuel then driving through town. I’m not sure what’s going on. Was told to drive it like I stole it. Will see if a motorway stint does the trick.
 
Might need an egr flush.what light has came on?
Egr Seems pretty common. I dont really think drive it like you stole is the best way.
Dont use cheap diesel and make sure it gets good runs.
 
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