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Thread: 2.0 TDI Failing The Regenerate The DPF

  1. #1
    coxy8329's Avatar
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    Question 2.0 TDI Failing The Regenerate The DPF

    DPF light came on last week; took it for a run on Saturday to clear it. It failed to clear and the 'glow plug' light has started to flash; then the 'emissions' light illuminated.

    Other symptoms the cruise control has deactivated (I suspect this is normal and due to the engine faults), and the car is currently running in a torque limiting limp mode (150Nm).

    I need to try and figure out why its not regenerating if anybody with more knowledge can review the scan below and possibly suggest a fix or something to look at it would be appreciated.
    Also could it do any additional damage if I continue to drive it? Is there any way to force it to carry out a regeneration?

    There are a couple of other faults but these are not issues to me currently.

    I would light to thank JohnnyM100 on here who kindly came around, scanned, and logged it for me.

    Monday,01,July,2013,18:51:00:00994
    VCDS Version: Release 11.11.5
    Data version: 20121222


    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------


    Chassis Type: 1K0
    Scan: 01 03 08 09 15 16 17 19 25 37 42 44 46 47 52 56 62 72


    VIN: WAUZZZ8P1******* Mileage: 198650km/123435miles


    01-Engine -- Status: Malfunction 0010
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    09-Cent. Elect. -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    37-Navigation -- Status: Malfunction 0010
    42-Door Elect, Driver -- Status: Malfunction 0010
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: Malfunction 0010
    47-Sound System -- Status: OK 0000
    52-Door Elect, Pass. -- Status: Malfunction 0010
    56-Radio -- Status: Malfunction 0010
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000

    -------------------------------------------------------------------------------
    Address 01: Engine Labels: 03G-906-018-BMN.clb
    Part No SW: 03G 906 018 DN HW: 03G 906 018 DN
    Component: R4 2.0l PPD1.2 G 4350
    Revision: --H42--- Serial number: AUX7Z0G5FNS0IM
    Coding: 0000072
    Shop #: WSC 00185 210 91035
    VCID: 74E3EB1317B8CDB8354


    2 Faults Found:
    008194 - Particulate Trap Bank 1
    P2002 - 006 - Efficiency Below Threshold - MIL ON
    Freeze Frame:
    Fault Status: 11100001
    Fault Priority: 5
    Fault Frequency: 11
    Reset counter: 40
    Mileage: 198402 km
    Time Indication: 0
    Date: 2013.06.30
    Time: 09:14:38


    Freeze Frame:
    RPM: 1760 /min
    Torque: 0.0 Nm
    Speed: 0.0 km/h
    (no units): 3.0
    Pressure: 0.0 mbar
    Lambda: 145.5 %
    Time: 4492.8 s


    008194 - Particulate Trap Bank 1
    P2002 - 006 - Efficiency Below Threshold - MIL ON
    Freeze Frame:
    Fault Status: 11100001
    Fault Priority: 5
    Fault Frequency: 6
    Reset counter: 40
    Mileage: 198565 km
    Time Indication: 0
    Date: 2013.06.30
    Time: 20:28:52


    Freeze Frame:
    RPM: 2144 /min
    Torque: 144.0 Nm
    Speed: 0.0 km/h
    (no units): 3.0
    Lambda: 145.5 %
    Pressure: 0.0 mbar
    Time: 4492.8 s


    Readiness: N/A


    -------------------------------------------------------------------------------
    Address 03: ABS Brakes Labels: 1K0-907-379-MK60-F.lbl
    Part No SW: 1K0 907 379 AC HW: 1K0 907 379 AC
    Component: ESP FRONT MK60 0101
    Revision: 00H11001
    Coding: 0023170
    Shop #: WSC 06314 000 00000
    VCID: 73E1E80F12B6CA802CE


    No fault code found.


    -------------------------------------------------------------------------------
    Address 08: Auto HVAC Labels: 8P0-820-043.lbl
    Part No SW: 8P0 820 043 AG HW: 8P0 820 043 AG
    Component: KlimavollautomatH19 0420
    Revision: 157516 Serial number: 8P0820043AG
    Shop #: WSC 06314 000 00000
    VCID: 71EDE20768AAF890DE2


    No fault code found.


    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. Labels: 8P0-907-279-30-H.lbl
    Part No SW: 8P0 907 279 K HW: 8P0 907 279 K
    Component: Bordnetz-SG H54 2501
    Revision: 00H54000 Serial number: 00000007300577
    Coding: 01880F01B0141000471600001600000000085E175C01000000 0000000000
    Shop #: WSC 06314 000 08192
    VCID: 458566D70CA2043052A


    Subsystem 1 - Part No: 8P2 955 119 E Labels: 1KX-955-119.CLB
    Component: Wischer AU350 H01 0130
    Coding: 00062736
    Shop #: WSC 06314


    No fault code found.


    -------------------------------------------------------------------------------
    Address 15: Airbags Labels: 8P0-959-655-94.lbl
    Part No SW: 8P0 959 655 L HW: 8P0 959 655 L
    Component: Airbag 9.41 H01 4210
    Revision: 91H01421 Serial number: 003CP00029W/
    Coding: 0071612
    Shop #: WSC 06314 000 00000
    VCID: 4B9150EF2AC6F24084E


    No fault code found.


    -------------------------------------------------------------------------------
    Address 16: Steering wheel Labels: 1K0-953-549-MY8.lbl
    Part No SW: 1K0 953 549 AH HW: 1K0 953 549 AH
    Component: J0527 036 0070
    Coding: 0000042
    Shop #: WSC 06314 000 00000
    VCID: 78FBDF230BD0A9D819C


    No fault code found.


    -------------------------------------------------------------------------------
    Address 17: Instruments Labels: 8P0-920-xxx-17-MY8.clb
    Part No SW: 8P0 920 981 K HW: 8P0 920 981 K
    Component: KOMBIINSTR. VDO H20 0640
    Revision: D0H20001 Serial number: 2245G001001991
    Coding: 0004428
    Shop #: WSC 00185 210 88124
    VCID: 408B77C31380211861C


    No fault code found.


    -------------------------------------------------------------------------------
    Address 19: CAN Gateway Labels: 1K0-907-530-V3.clb
    Part No SW: 1K0 907 530 L HW: 1K0 907 951
    Component: J533__Gateway H15 0180
    Revision: H15 Serial number: 1400K076238264
    Coding: E9807F065002022103
    Shop #: WSC 00185 210 89734
    VCID: 306B2703A320B19891C


    No fault code found.


    -------------------------------------------------------------------------------
    Address 25: Immobilizer Labels: 1K0-920-xxx-25.clb
    Part No SW: 8P0 920 981 K HW: 8P0 920 981 K
    Component: KOMBIINSTR. VDO H20 0640
    Revision: D0H20001 Serial number: AUX7Z0G5FNS0IM
    Shop #: WSC 00000 000 00000
    VCID: 408B77C31380211861C


    No fault code found.


    -------------------------------------------------------------------------------
    Address 37: Navigation Labels: 8E0-035-192-RNSE.lbl
    Part No SW: 8P0 035 193 G HW: 8P0 035 193 G
    Component: RNS-E PU EU H05 0200
    Revision: 0000011S Serial number: AUZBZ7KD200776
    Coding: 0205755
    Shop #: WSC 00079 211 08191
    VCID: 34632B1357388DB8F54


    3 Faults Found:
    00858 - Connection; Radio ZF Output to Antenna Amplifier
    007 - Short to Ground
    Freeze Frame:
    Fault Status: 01100111
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 187
    Mileage: 186254 km
    Time Indication: 0
    Date: 2012.07.29
    Time: 00:05:02


    Freeze Frame:
    Mileage: 186250 km
    Count: 2907
    Clock: 00:04


    00466 - Control Module for Steering Column Electronics (J527)
    008 - Implausible Signal
    Freeze Frame:
    Fault Status: 01101000
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 187
    Mileage: 186254 km
    Time Indication: 0
    Date: 2012.07.29
    Time: 00:04:49


    01303 - Telephone Transceiver (R36)
    004 - No Signal/Communication
    Freeze Frame:
    Fault Status: 01100100
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 187
    Mileage: 186254 km
    Time Indication: 0
    Date: 2012.07.29
    Time: 00:04:55




    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver Labels: 8P0-959-801-MIN3.lbl
    Part No SW: 8P0 959 801 K HW: 8P0 959 801 K
    Component: Tuer-SG H03 0040
    Coding: 0000688
    Shop #: WSC 06314 000 00000
    VCID: 438178CF02963A007CE


    1 Fault Found:
    00915 - Window Regulator Switch; Rear Right; Driver (E55)
    008 - Implausible Signal - Intermittent


    -------------------------------------------------------------------------------
    Address 44: Steering Assist Labels: 1Kx-909-14x-44.clb
    Part No: 1K2 909 144 M
    Component: EPS_ZFLS Kl.079 H08 1901
    Shop #: WSC 02069 000 90108
    VCID: 3667111B41449FA8CB0


    No fault code found.


    -------------------------------------------------------------------------------
    Address 46: Central Conv. Labels: 8P0-959-433.lbl
    Part No: 8P0 959 433 J
    Component: KSG H10 0080
    Coding: 1980202002186D0985054C9FC637
    Shop #: WSC 06314 000 00000
    VCID: 438178CF02963A007CE


    Part No: 1K0 951 605 C
    Component: LIN BACKUP HORN H03 1301


    Part No: 1K0 907 719 C
    Component: Neigungssensor 005 0003


    Part No: 8P0 951 177
    Component: Innenraumueberw.H04 0020


    1 Fault Found:
    00956 - Key 2
    005 - No or Incorrect Basic Setting / Adaptation - Intermittent


    -------------------------------------------------------------------------------
    Address 47: Sound System Labels: 8Px-035-382.lbl
    Part No SW: 8P4 035 382 D HW: 8P4 035 382 D
    Component: AB2 SUBWOOFERBOXH06 0180
    Revision: 00005 Serial number: 30674703039264
    Shop #: WSC 00000 000 00000
    VCID: 356516175C4294B0C2A


    No fault code found.


    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. Labels: 1K0-959-702-MIN3.lbl
    Part No SW: 8P0 959 802 K HW: 8P0 959 802 K
    Component: Tuer-SG H03 0040
    Coding: 0000688
    Shop #: WSC 06314 000 00000
    VCID: 44837BD307983D38454


    1 Fault Found:
    00936 - Electric Window Switch in Front Passenger Door (E107).
    008 - Implausible Signal - Intermittent


    -------------------------------------------------------------------------------
    Address 56: Radio Labels: 8E0-035-192-RNSE.lbl
    Part No SW: 8P0 035 193 G HW: 8P0 035 193 G
    Component: RNS-E PU EU H05 0200
    Revision: 0000011S Serial number: AUZBZ7KD200776
    Coding: 0205755
    Shop #: WSC 00079 211 08191
    VCID: 34632B1357388DB8F54


    3 Faults Found:
    00858 - Connection; Radio ZF Output to Antenna Amplifier
    007 - Short to Ground
    Freeze Frame:
    Fault Status: 01100111
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 187
    Mileage: 186254 km
    Time Indication: 0
    Date: 2012.07.29
    Time: 00:05:02


    Freeze Frame:
    Mileage: 186250 km
    Count: 2907
    Clock: 00:04


    00466 - Control Module for Steering Column Electronics (J527)
    008 - Implausible Signal
    Freeze Frame:
    Fault Status: 01101000
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 187
    Mileage: 186254 km
    Time Indication: 0
    Date: 2012.07.29
    Time: 00:04:49


    01303 - Telephone Transceiver (R36)
    004 - No Signal/Communication
    Freeze Frame:
    Fault Status: 01100100
    Fault Priority: 5
    Fault Frequency: 1
    Reset counter: 187
    Mileage: 186254 km
    Time Indication: 0
    Date: 2012.07.29
    Time: 00:04:55




    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left Labels: 8P4-959-801.lbl
    Part No SW: 8P4 959 801 E HW: 8P4 959 801 E
    Component: Tuer-SG H04 0040
    Coding: 0000144
    Shop #: WSC 06314 000 1012544
    VCID: 418D72C7188A28106E2


    No fault code found.


    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right Labels: 8P4-959-802.lbl
    Part No SW: 8P4 959 802 E HW: 8P4 959 802 E
    Component: Tuer-SG H04 0040
    Coding: 0000144
    Shop #: WSC 06314 000 1012544
    VCID: 428F7DCB1D8C3308778


    No fault code found.


    End ---------------------------------------------------------------------
    Audi A3 Sline 170 2.0 TDI

    Mods Done
    -
    RNS-E mkII fitted, Tinted Repeaters, Center Armrest,
    LED Interior Lights, Cruise Control, LED Number Plate Lights,
    VW fan windshield washers, S3 Pedals, Metal Footrest,
    DPF & EGR delete, Unicorn Remap, De-badged the tailgate.


    With DPF Without DPF

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  3. #2
    NHN
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    Could be an exhaust sensor is dicky, ideally need to try & regen with vcds, see what it responds like, but seems to point to sensor.

    Few other errors which are probably rns retrofit related.

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    As nhn says, try a forced regen or at least check soot loads in measuring blocks
    '02 TDi 130 Sport: Mods to date: BXP 160 conversion, EGR delete, Decat, Helix SMF fast road clutch, 312mm front rotors, full DIS , CC, Xenons.
    VCDS fully registered and happy to help.
    *Need a Spare Key or Remote? SKC retrieval? Clock/ECU swap or milage correction? I am fully insured to work on your vehicle! Offering a good deal and quality service to ASN members Nationwide!*

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    Been a while since I was selling vags but I had one or two that wouldn't regenerate on the road. The mechs got them in and forced it via the computers and it cleared the problem, basically what the guys are saying above. Although watching the temperatures on the screen it was amazing how hot it all needs to get!

    there's a same chance the dpf is bust aswell, had one I remember just wouldn't regenerate and it was a mess inside apparently. Then it's surely time for its removal!

  6. #5
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    Quote Originally Posted by spats View Post
    Been a while since I was selling vags but I had one or two that wouldn't regenerate on the road. The mechs got them in and forced it via the computers and it cleared the problem, basically what the guys are saying above. Although watching the temperatures on the screen it was amazing how hot it all needs to get!

    there's a same chance the dpf is bust aswell, had one I remember just wouldn't regenerate and it was a mess inside apparently. Then it's surely time for its removal!
    Pretty sure DPF's dont last forever, they have a lifespan. You've already done 120k.. perhaps it is at end of life? Time for removal and remap? Replacements are quite pricey.
    Brodster likes this.

  7. #6
    Rick @ Unicorn Motor Dev.'s Avatar
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    DPF has had it. Either new one or have it removed. You won't do any damage as such, but if the DPF continues to become more blocked then eventually the engine will barely run.

    Rick
    NHN and Brodster like this.
    Unicorn Motor Developments. Bespoke Calibration and Remapping Services
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  8. #7
    coxy8329's Avatar
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    Thanks for the replys.

    Having looked at the logs we recorded. The DPF load co-efficient is at >160% and there appears to be a 328mb (4.76psi) across the DPF, both of which appear to be high, so blocked or partially blocked DPF.

    Quote Originally Posted by NHN View Post
    Could be an exhaust sensor is dicky, ideally need to try & regen with vcds, see what it responds like, but seems to point to sensor.

    Few other errors which are probably rns retrofit related.
    Yes the other faults are mostly RNSE retrofit related.

    Quote Originally Posted by Rick @ Unicorn Motor Dev. View Post
    DPF has had it. Either new one or have it removed. You won't do any damage as such, but if the DPF continues to become more blocked then eventually the engine will barely run.

    Rick
    Quote Originally Posted by Lee540 View Post
    Pretty sure DPF's dont last forever, they have a lifespan. You've already done 120k.. perhaps it is at end of life? Time for removal and remap? Replacements are quite pricey.
    It's already booked in for DPF removal at the end of the month.

    Quote Originally Posted by @udi A3 View Post
    As nhn says, try a forced regen or at least check soot loads in measuring blocks
    Sample logs are below.



    Group A: 075


    Group B: 070


    Group C: 068


    Temperature bef. Temperature bef. Particle Filter Temperature after Status 4 Regeneration Failed Successful
    Particle Filter Particle Filter Carbon Mass
    TIME Turbo Charger Particle Filter Load Coefficient Particle Filter TIME Regeneration Time (Total) Regenerations Regenerations TIME Load Coefficient Carbon Mass Learned Value
    STAMP °C °C % °C STAMP
    s

    STAMP %
    %
    0.37 261.3 324.3 161.3 341.6 0.06
    4500 3
    0.22 161.3 0.2

    Group A:

    075




    Group B:

    070




    Group C:

    084




    Temperature bef. Temperature bef. Particle Filter Temperature after Status 4 Regeneration Failed Successful
    Lambda Lambda (no units) (no units)
    TIME Turbo Charger Particle Filter Load Coefficient Particle Filter TIME Regeneration Time (Total) Regenerations Regenerations TIME



    STAMP °C °C % °C STAMP
    s

    STAMP % %

    0.11 478.5 315.7 163 318.5 0.25
    4500 3
    0.39 163



    Group A:

    075




    Group B:

    074




    Group C:

    009




    Temperature bef. Temperature bef. Particle Filter Temperature after Engine Speed Temperature bef. Lambda/Oxygen Injection Quantity Engine Speed Torque Request Transmission Torque Restriction
    TIME Turbo Charger Particle Filter Load Coefficient Particle Filter TIME (G28) Turbo Charger Sensor Value Offset TIME (G28) (Cruise Control) Limitiation
    STAMP °C °C % °C STAMP /min °C
    mg/str STAMP /min Nm Nm Nm
    0.13 154.7 250 165.6 318.5 0.27 911 152.4 31.98
    0.43 809 -976.5 1024 150

    Group A:

    075




    Group B:

    033




    Group C:

    067




    Temperature bef. Temperature bef. Particle Filter Temperature after Engine Speed Temperature Pressure Mass Flow
    Temperature bef. Temperatur in Press. Difference Press. Difference
    TIME Turbo Charger Particle Filter Load Coefficient Particle Filter TIME (G28)


    TIME Turbo Charger Particle Filter Particle Filter Offset
    STAMP °C °C % °C STAMP /min °C mbar g/s STAMP °C °C mbar mbar
    0.21 522.9 393.7 158.6 338.4 0.37 2424 393.7 1353.6 42.2 0.07 522.9 377.6 328 2
    Audi A3 Sline 170 2.0 TDI

    Mods Done
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    RNS-E mkII fitted, Tinted Repeaters, Center Armrest,
    LED Interior Lights, Cruise Control, LED Number Plate Lights,
    VW fan windshield washers, S3 Pedals, Metal Footrest,
    DPF & EGR delete, Unicorn Remap, De-badged the tailgate.


    With DPF Without DPF

  9. #8
    Rick @ Unicorn Motor Dev.'s Avatar
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    Emergency and Forced are the same thing, but I don't think you are going to have any joy with that

    Rick
    Unicorn Motor Developments. Bespoke Calibration and Remapping Services
    www.unicornmotordevelopments.com

  10. #9
    coxy8329's Avatar
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    Rick Hopefully it will keep going until the DFP delete at the end of the month.

    In the meantime I found this on an old thread, it seems to contain some useful information, so I thought I repost it.

    Quote Originally Posted by c_w View Post
    Copies from another forum;

    VAG DISESEL PARTICULATE FILTERS

    Courtesy of David Bodily Volkswagen Technical Support Specialist

    Diesel Particulate Filter (DPF)

    Detailed below is important information outlining the function and features of the Diesel Particulate filter which all members of your team need to be aware of.

    Diesel particulate filters are becoming more commonplace on diesel engines, particularly sizes 2.0L upwards. This is in order to reduce the exhaust emissions as required by European legislation.

    The prime reason for a DPF is to reduce particulate matter entering the atmosphere. Particulate matter is found in the form of soot, which is produced during diesel combustion. The DPF traps most of the soot which would normally travel down the exhaust and into the atmosphere. The DPF can hold a certain amount of soot, but not a huge quantity and therefore it needs to go through a process called ‘regeneration’ in order to clear the soot loading. When the soot goes through a ‘regeneration’ process it will be converted to a much smaller amount of ash. The ash is non-removable. There are two types of ‘regeneration’, passive and active.

    During long motorway journeys, passive regeneration will occur. This needs no intervention from the engine control unit. Due to the raised exhaust temperatures on a long journey (temperatures between 350 and 500�C), the procedure occurs slowly and continuously across the catalytic-coated (with platinum) DPF. The catalytic-coated DPF is situated close to the Engine, therefore the exhaust gas temperature is high enough (500�C) to ignite the soot particles. Due to this soot is burned-off and is converted into a smaller amount of ash.

    Active ‘regeneration’ is when the ECU intervenes when the soot loading in the DPF is calculated to be 45%. The procedure lasts for about 5 – 10 minutes. Specific measures are taken by the ECU to raise the engine exhaust temperature to above 600�C, these include switching off the exhaust gas recirculation and increasing the fuel injection period to include a small injection after the main injection. The soot particles are oxidised at this temperature.

    The ECU will trigger a regeneration process, if for some reason this is aborted, ie. customer slows down, stops etc, the process will be resumed when regeneration conditions are once again met, above 60km/h (38mph). This will continue for 15 minutes.

    If after 2 attempts of 15 minutes, a successful regeneration has not been possible, the loading will increase. At 50% soot loading, the ECU will continue to maintain maximum exhaust temperatures of 600�C to 650�C to cause a regeneration process. The system will try to run a regeneration process for 15 minutes. If unsuccessful, the system will repeat this process for a further 15 minutes, if still unsuccessful, the DPF light on the driver display panel will then be lit.

    The owners handbook states, the DPF symbol lights up to indicate that the diesel particulate filter has become obstructed with soot due to frequent short trips. When the warning lamp comes on, the driver should drive at a constant speed of at least 60 km/h for about 10 minutes. As a result of the increase in temperature the soot in the filter will be burned off. If the DPF symbol does not go out, the driver should contact an authorised Volkswagen repairer and have the fault rectified.

    At 55% soot loading the DPF light is lit on driver display panel. At this point the customer should follow the advice in the handbook. If they ignore this information and continue driving the vehicle until the soot loading reaches 75% without successful regeneration, additional warning lamps will light up. At this point the customer will also be complaining of lack of power, etc.

    At 75%, regeneration is still possible with the use of the VAS tester. Only when the loading is above 95%, is it necessary to replace the DPF unit.


    Operating Status System Response

    45% DPF Load Level 1
    Normal Regeneration

    50% DPF Load Level 2
    Regeneration at maximum exhaust temperatures

    55% DPF Load DPF lamp
    Regeneration from 60 km/h onwards
    ("See operating manual")

    75% DPF Load DPF, SYS and MI lamp
    Torque limitation, EGR deactivation,

    Regeneration via VAG tester only
    95% DPF Load Replace the DPF Unit



    The Warranty department has confirmed that if there is no fault on the vehicle and DPF regeneration has been unsuccessful due to the customers driving style and the customers failure to comply with the instructions in the handbook, DPF replacement will not be paid for by warranty.


    Common causes for complaint

    • Frequent short journeys – Regeneration conditions are not met.
    Not recommended for sale in the Channel Islands and inner city driving.

    • Customers who continue to drive the vehicle with DPF light on – Continued
    driving with the DPF light on and without successful regeneration results in
    excessive soot loading of the DPF, to a point where it is above 95% loaded.
    At this point regeneration is not an option and replacement of the DPF is
    necessary.

    • Fault 18434 particle filter bank 1 malfunction – Common fault code. This does
    not only relate to the DPF itself, but the entire exhaust gas handling system. This
    can be caused by defective temperature sensors, pressure sensors, additive
    system components (if applicable), poor connections, wiring issues, etc.



    Important Information

    • Before diagnosing a problem vehicle or attempting to perform an emergency
    regeneration, it is important to obtain a full diagnostic log and read out relevant
    measured value blocks. These MVB’s contain important information on the
    condition of the DPF system and are essential in diagnosing the fault. When the
    DPF light is illuminated, it does not necessarily mean that the DPF requires
    regeneration. For further advice, please contact Technical Support with the
    information from the diagnostic log and MVB data.

    • If a problem vehicle arrives with the DPF light, the engine management light and
    the emissions light on. If during your diagnosis and reading of relevant MVB’s,
    you find that the soot loading exceeds 75% (but is still below 95%), an
    emergency regeneration procedure must be performed with the VAS tester.
    Further to this, the customer needs to be educated. They need to understand
    why the lights have appeared on the dash panel. Their attention needs to be
    brought to the owners handbook instructions, so that they are aware of what the
    DPF light means and what to do when it appears. This should prevent
    unnecessary repeat visits for regeneration purposes.


    I have also found that as the car gets older 30K+ miles, you will notice that the regeneration takes place more often.


    ALWAYS, check your oil before any long journey, as DPF regeneration can use a fair bit of oil.



    Some questions and answers that may help;


    Question: The glow plug symbol is flashing. Why? What should be done?

    Answer:
    The DPF regeneration has not been completed during normal driving and now DPF has reached its maximum saturation at which it can still be regenerated. The limit value depends on variant and Model Year, but is in the range of 105% - 125%.Possible causes for this are:

    a.) Frequent short distance journeys, i.e. high soot loading while at the same time regeneration of the DPF does not take place because the conditions necessary were not fulfilled.

    b.) Frequent interrupted regenerations, i.e. the engine was switched off during regeneration. Applies to short journey drivers who have at least fulfilled the conditions for triggering regeneration. If the glow plug light flashes, the vehicle

    a.) Engine running since start for longer than 2 minutes.
    b.) Calculated saturation higher than 80%.
    c.) Coolant temperature over 70�C for at least 2 minutes.
    d.) No DPF-relevant faults stored in system.
    e.) A defined vehicle speed threshold must have been exceeded (e.g. for >80% loading, 100 km/h)



    Question: Under what conditions is regeneration interrupted/ended once it has started?

    Answer: Normally when regeneration has been successfully completed, or:

    a.) After a maximum regeneration time (20 - 25 min.).
    b.) If the engine is switched off or has stalled.
    c.) If the engine is left idling for a long time (5 - 10 min.).
    d.) If 1000�C is detected by the exhaust temperature sensor.
    e.) If during regeneration, a fault is detected on the components relevant for combustion (injection/intake system).

    If a regeneration is interrupted once started but before it has been 50% completed, the glow plug lamp flashes on the next engine start (cold or hot) and regeneration begins again once the operating conditions (see 3) have been fulfilled.



    Question: How long does complete regeneration take?
    a.) In the most favourable case? b.) In the least favourable case?

    Answer:
    a.) Under constant conditions, i.e. the exhaust temperature necessary for regeneration always lies above the required value, for example during motorway/cross-country driving, the average regeneration time is 10 minutes.

    b.) Vehicle conditions such as long down-hill descents, frequent driving in the low-load range (city driving, idling) allow the exhaust temperature to fall. If the conditions for triggering regeneration were fulfilled, the active regeneration time can be extended up to 25 minutes (depending on engine type). If complete regeneration is not possible within this period, the regeneration will be interrupted.
    Audi A3 Sline 170 2.0 TDI

    Mods Done
    -
    RNS-E mkII fitted, Tinted Repeaters, Center Armrest,
    LED Interior Lights, Cruise Control, LED Number Plate Lights,
    VW fan windshield washers, S3 Pedals, Metal Footrest,
    DPF & EGR delete, Unicorn Remap, De-badged the tailgate.


    With DPF Without DPF

  11. #10
    JohnnyM100's Avatar
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    Quote Originally Posted by Rick @ Unicorn Motor Dev. View Post
    DPF has had it. Either new one or have it removed. You won't do any damage as such, but if the DPF continues to become more blocked then eventually the engine will barely run.

    Rick
    Matt - sorry to hear that it is beyond regeneration

    Quote Originally Posted by coxy8329 View Post
    Rick Hopefully it will keep going until the DFP delete at the end of the month.

    In the meantime I found this on an old thread, it seems to contain some useful information, so I thought I repost it.
    Hope it keep going until the DPF delete - and a very useful post that you found.

    Quote Originally Posted by coxy8329 View Post
    I would light to thank JohnnyM100 on here who kindly came around, scanned, and logged it for me.
    You are most welcome!

    John.
    coxy8329 likes this.

  12. #11
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    Coxy, how much are you paying for the DPF delete, if you dont mind me asking?

    <ime has been giving me some trouble for a while now too, due to the short distances during the week. I ;had serious lack of power recently which seems to have picked up since replacing an unbelievably clogged fuel filter, but I still think the DPF is causing power/torque issues.
    A3 8P2 2.0TDI S-Line 170 SB | Brilliant Red | Full Leather | BOSE | 6 Disc Changer | None Smoking Pack | Light Interior Pack (Converted to LEDs) | Rear Parking Sensors | S3 Air Vents | S3 Mirrors - Stolen!| S3 Pedals |

  13. #12
    coxy8329's Avatar
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    Quote Originally Posted by mdre83 View Post
    Coxy, how much are you paying for the DPF delete, if you dont mind me asking?
    Get in touch with Rick at Unicorn, he posted above, they are in Stockport so quite a drive. I booked with them because the reviews I found on here and other forums were good, and that I would be passing at the end of the month. DPF gutting, remap, and EGR blanking.

    Quote Originally Posted by mdre83 View Post
    Ime has been giving me some trouble for a while now too, due to the short distances during the week. I ;had serious lack of power recently which seems to have picked up since replacing an unbelievably clogged fuel filter, but I still think the DPF is causing power/torque issues.
    Yep mines had loss of power due to the ECU going into a type of limp mode, torque restriction to 150Nm, should be around 350Nm according to the original specs.
    It's like driving a 1.0L Fiesta, so very slow acceleration and goes backwards when going up hill.
    Audi A3 Sline 170 2.0 TDI

    Mods Done
    -
    RNS-E mkII fitted, Tinted Repeaters, Center Armrest,
    LED Interior Lights, Cruise Control, LED Number Plate Lights,
    VW fan windshield washers, S3 Pedals, Metal Footrest,
    DPF & EGR delete, Unicorn Remap, De-badged the tailgate.


    With DPF Without DPF

  14. #13
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    I had a similar issue on my wife's 07 2.0tdi 170 DSG.

    passive regen seemed to happening for about half an hour and then full DPF active warning light so tried the motorway run in fourth gear at 3000rpm but couldn't get rid of DPF light! then the coil plug light started flashing and went into limp mode.

    About month previously the EML came on and after VSDS scan it was the G450 dpf sensor fault, so investigated the part but never got round to fitting it.

    After extensive googling I hoped it was the G450 sensor that was the root problem as it's cheap part and known to fail.

    Got one for €60 in Audi South Dublin and fitted and coded it this evening(removing old sensor from pipes was a nightmare!)

    After adapting it and re scan the soot level is now 4%(it was exactly 20% before) and car runs fine, strangely the following fault remains

    Address 01: Engine Labels: Redir Fail!
    Part No SW: 03G 906 018 DN HW: 03G 906 018 DN
    Component: R4 2.0l PPD1.2 1247
    Revision: --H42--- Serial number: AUX7Z0G4FN3049
    Coding: 0000078
    Shop #: WSC 06314 000 00000
    VCID: 74E3D8E36C7B


    but no detail like other faults.

    can anyone help?

    Paul

  15. #14
    NHN
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    What fault, as cant see any there.

    If you mean redir Fail, this is not a fault, its just part of the program vcds.

    OEM RETROFITS - CRUISE CONTROL - SAT NAV - BLUETOOTH - AMI - HEADLIGHT SYSTEMS

    PARKING SYSTEMS - DIAGNOSTICS - FAULT FINDING - BODYWORK - PAINTWORK

  16. #15
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    Quote Originally Posted by NHN View Post
    What fault, as cant see any there.

    If you mean redir Fail, this is not a fault, its just part of the program vcds.
    01-Engine -- Status: Malfunction 0010
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    09-Cent. Elect. -- Status: Malfunction 0010
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: Malfunction 0010
    25-Immobilizer -- Status: OK 0000
    37-Navigation -- Status: Not registered 0011
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: Malfunction 0010
    47-Sound System -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    56-Radio -- Status: Malfunction 0010
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    76-Park Assist -- Status: OK 0000
    77-Telephone -- Status: OK 0000

    -------------------------------------------------------------------------------
    Address 01: Engine Labels: Redir Fail!
    Part No SW: 03G 906 018 DN HW: 03G 906 018 DN
    Component: R4 2.0l PPD1.2 1247
    Revision: --H42--- Serial number: AUX7Z0G4FN3049
    Coding: 0000078
    Shop #: WSC 06314 000 00000
    VCID: 74E3D8E36C7B

  17. #16
    NHN
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    Try posting the whole log & TBH use another thread as this is clogging coxy's.

    OEM RETROFITS - CRUISE CONTROL - SAT NAV - BLUETOOTH - AMI - HEADLIGHT SYSTEMS

    PARKING SYSTEMS - DIAGNOSTICS - FAULT FINDING - BODYWORK - PAINTWORK

  18. #17
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    Quote Originally Posted by NHN View Post
    Try posting the whole log & TBH use another thread as this is clogging coxy's.
    I thought my car failing to regen and then fixing it today with G450 replacement would be of interest to Coxy

  19. #18
    NHN
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    Uh unless I'm seeing something you're not, you're saying you still have faults listed, but thus far you haven't shown us the log with the faults show, hence why I said open a new thread with the full log, cant help with just a line saying "Malfunction 0001" need to see what's logged in that module as a fault, to ascertain how to advise.

    OEM RETROFITS - CRUISE CONTROL - SAT NAV - BLUETOOTH - AMI - HEADLIGHT SYSTEMS

    PARKING SYSTEMS - DIAGNOSTICS - FAULT FINDING - BODYWORK - PAINTWORK

  20. #19
    theo289's Avatar
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    Defo the way forward with a DPF delete. I have an Audi A3 170 TDi and i get on average around 50mpg and a full tank will last around 550 miles!

    The turbo is slightly louder and spools are more impressive so throughly recommend it for you - definately something you won't regret

  21. #20
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    A little up date.
    Well I purchased a VCDS cable from NHN arrived quickly and well packaged. So I've spent a couple of evenings playing with VCDS.

    Today I got the chance to take it down the motorway and carry out a forced regeneration. So went out and it was successfully cleared the DPF. Started with a coefficient of 253% after 40 miles on the motorway it was down to 8.4%. MIL and DPF warning lights out and no more 'Limp Mode'. The emissions warning light stayed on until I scanned and cleared the fault.

    So happy days.
    Thanks for the help and advice I've received from the people on here.
    Audi A3 Sline 170 2.0 TDI

    Mods Done
    -
    RNS-E mkII fitted, Tinted Repeaters, Center Armrest,
    LED Interior Lights, Cruise Control, LED Number Plate Lights,
    VW fan windshield washers, S3 Pedals, Metal Footrest,
    DPF & EGR delete, Unicorn Remap, De-badged the tailgate.


    With DPF Without DPF

  22. #21
    NHN
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    Brilliant news man, well spent money that hey fella

    OEM RETROFITS - CRUISE CONTROL - SAT NAV - BLUETOOTH - AMI - HEADLIGHT SYSTEMS

    PARKING SYSTEMS - DIAGNOSTICS - FAULT FINDING - BODYWORK - PAINTWORK

 

 

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