DPF readings

[FatblokeVRS]

Hi All

 

Was scanning my VRS with VCDS and had a wee play around and found some info on the DPF. Car has done nearly 95,000 miles now and we had the DPF cleaned out a while back after it choked with a remap.

 

Are these readings ok?

 

13 mbar Particle Filter Different. Pressure

99 ml Particle Filter Oil Ash Volume

21.9 Particle Filter Carbon Mass (spec.)

18.3 Particle Filter Carbon Mass (act.)

 

[langers2k]

99ml in 95k miles seems normal enough, that suggests the DPF should be good for ~170k assuming the commonly stated 175ml is indeed the max.

 

Carbon mass also look fine but it's probably about to do a regen

 

Only concern is that you say you had the DPF cleaned out? If you mean it just had a service/forced regen, that's fine. If you mean they removed it and actually cleaned it, then the oil ash volume doesn't seem right.

[FatblokeVRS]

It was physically removed and cleaned as far as I am aware.

[ronnievincent]

On 28/06/2020 at 12:58, FatblokeVRS said:

It was physically removed and cleaned as far as I am aware.

After the DPF was cleaned and refitted was the 'Adaption of Carbon Mass' as Ross Tech term it carried out through Adaptions? After doing that you should also carry out a 'Service Re-generation'

If not the ECU will still think that the DPF has an 'Ash Value'

 

From Ross Tech 2.0L CR Tdi

Adaption of Carbon Mass (After DPF Replacement)

Prerequisites:

Ignition On

Engine Off

[Security Access - 16]

Enter the code shown in the VCDS pop up balloon for 'Adaption Enabling'

[Do It!]

[Adaption - 10]

From the pull down menu, select the entry for 'Carbon Mass (DPF Replacement)' or '[*IDE00275*] Particle Filter initialization

* If those channels are not available look for [*IDE07903*] Adaption of Ash Mass

Save a new value of 1 to reset the learned Carbon Mass. It's normal for that value to automatically change to 0 after it has been successfully saved.

Check and clear fault codes to make sure non are present.

 

After that carry out a Service Re-generation through Basic Settings.

Edited 5 July, 2020 by ronnievincent
Typo in the text

[FatblokeVRS]

5 hours ago, ronnievincent said:

After the DPF was cleaned and refitted was the 'Adaption of Carbon Mass' as Ross Tech term it carried out through Adaptions? After doing that you should also carry out a 'Service Re-generation'

If not the ECU will still think that the DPF has an 'Ash Value'

 

From Ross Tech 2.0L CR Tdi

Adaption of Carbon Mass (After DPF Replacement)

Prerequisites:

Ignition On

Engine Off

[Security Access - 16]

Enter the code shown in the VCDS pop up balloon for 'Adaption Enabling'

[Do It!]

[Adaption - 10]

From the pull down menu, select the entry for 'Carbon Mass (DPF Replacement)' or '[*IDE00275*] Particle Filter initialization

* If those channels are not available look for [*IDE07903*] Adaption of Ash Mass

Save a new value of 1 to reset the learned Carbon Mass. It's normal for that value to automatically change to 0 after it has been successfully saved.

Check and clear fault codes to make sure non are present.

 

After that carry out a Service Re-generation through Basic Settings.

 

It was cleaned a while ago. Not sure if they did the procedure above. If the adaption was done now does that then set it back to zero? Does it then re-learn the actual ash level?

 

How do you do a service regeneration?

[ronnievincent]

On 05/07/2020 at 22:23, FatblokeVRS said:

 

It was cleaned a while ago. Not sure if they did the procedure above. If the adaption was done now does that then set it back to zero? Does it then re-learn the actual ash level?

 

How do you do a service regeneration?

 

Hi, this is taken from Ross Tech WiKi

 

I would run an Autoscan to make sure there are no outstanding fault codes that would prevent it doing a re-generation, such as EGR or Injector or timing errors.

Where the text states 'Regeneraration while standing' that refers to Service Regeneration

It also states that 'this may take 30 minutes' mine took nearly 40.

You can check out quite a lot at Ross Tech, download their manual, FAQ's, Support, WiKi pages and there own Forum.

In the measuring data if you type 'partic' in the search box it will bring up the measuring blocks you need to measure the soot and ash content. You can do this without doing a regeneration.

To answer your question, yes it would reset to '0' but if there is any residual ash then obviously that might distort the reading a bit. I reset mine after a 'chemical clean' using the JML 2 stage process so not too sure what medium / long term effect resetting the value after it has been running will have.

Hope this is some help?

 

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]

[J.R.]

In the measuring data if you type 'partic' in the search box it will bring up the measuring blocks you need to measure the soot and ash content.

 

That has saved me no end of hassle in the future, I struggle to read the computer screen in the car (too close) and have to read through seemingly hundreds of parameters ticking the ones that seem relevant, its all to easy to miss some, I did not know there was a search function and/or did not think to use it, thanks a lot!!!