Diesel Particle Filter Emergency Regeneration

From Ross-Tech Wiki

Jump to: navigation, search

Contents

1.4l/1.9l/2.0l R4 & 2.5l R5 PD/PPD-TDI

Prerequisites (General):

  • Ignition ON
  • Engine ON (Idle)
  • Coolant Temperature above 50 °C (see MVB 002.4)
  • Particle Filter Load below Specification (see MVB 075.3, VAG-COM should give the specified value)
    • 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)

Conditions (Driving Cycle):

  • Vehicle Speed between 30-60 km/h (18-37 MPH)
  • Engine Speed between 1500-2500 RPM (4th or 5th Gear, Automatic Transmission in Tiptronic)
  • Duration approx. 15-20 Minutes
  • Exhaust Gas Temperature before Turbo Charger above 700 °C

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]

[Coding-II - 11]

  • Enable Regeneration by Entering 21295.

[Do It!]

[Meas. Blocks - 08]
Select both Groups at once 070 and 075.
[Go!]
MVB 070.1: Regeneration Status (xxxxxxx1 = Normal Regeneration active, xxxxxx1x = Forced Regeneration active)
MVB 070.3: Regeneration Counter/Timer
MVB 075.1: Exhaust Gas Temperature before Turbo Charger
MVB 075.2: Exhaust Gas Temperature before Particle Filter
MVB 075.3: Particle Filter Load
MVB 075.4: Exhaust Gas Temperature after Particle Filter

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

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


1.6l/2.0l R4 CR-TDI

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!]

  • Follow the Instructions on the Screen

[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: 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

Now let the Car run with Raised Idle until the Particle Filter Load is as low as possible (close to 0 %).

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

Special Notes

  • For engine controllers that use the UDS protocol (as shown on the top left corner of the Open Controller screen), no Security Access is needed and the regeneration is selected in Basic Settings (not in Adaptation like the older engine controllers). Select the Basic Settings called "Service regeneration of particle filter" or similar and follow the on-screen instructions (foot on brake, foot on accelerator, etc).

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: Particle Filter Soot Mass (calculated)
MVB 108.3: 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]

3.0l V6 CR-TDI

See Engine specific page.




Unless otherwise noted, all content on this site is Copyright © 2000-2010 by Ross-Tech LLC. All rights reserved.
"VCDS" is a Registered Trademark of Ross-Tech, LLC.
Ross-Tech is not affiliated with the Volkswagen Group in any way.