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Thread: DPF Regeneration.

  1. #1
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    DPF Regeneration.

    Hi, I have posted before about this issue but things have moved on so it is a little different now. 2012 Skoda Octavia 2.0 Tdi CR Engine Code CFHC.
    I appear to have rectified other faults that showed up originally with the EGR and partly with the DPF.
    Having 'chemically' cleaned out the DPF with the JLM 2 stage process which did have the desired effect in that it removed ash and soot as expected. Checked and reset all the values, filled with Shell Diesel and threw in a bottle of Forte additive, just for good measure. Took the car out for a very long drive, around 1h30m for about 120 miles. As constant speed as possible, 4th gear, 60 mph at 2500rpm. No EML, No flashing Glow Plug Light and No Particulate Filter Light and no smoke of any kind from the exhaust.
    Couple of days later, Diesel Particulate Filter Light comes on and if ticking over or low speeds around town smoke appears on pulling away. Ran a scan with VCDS which showed no other fault registered so not looking at EGR or (currently) at any faulty sensors. Tried a 'Service Regeneration' after taking it for a run out to get up to temperature and that did the same as it always has, kicks in, revs increase but soot content increases. I therefore took it out to the 'fast' road near where I live with the intention doing a regeneration when driving. However, firstly, when I pulled to set it up the car was running at fast tick over, around 1000 rpm, so I looked at the figures on the screen and the soot content was reducing so it was obviously attempting some form of regeneration. It got to around 15g and stopped reducing so tried to set up the driving regeneration but could not get that set up because the VCDS process was not as set out. To start with, Coding-II - 11 was 'greyed out and could not access it which was ok because i have the later CR engine. Entered the security code and then into Adaptation - 10, selected the Regeneration while driving, the values were both shown as 0 so entered the 'new value' 1 but VCDS came up with a screen asking yes or no to either using the value, using a default value or a value supplied? I tried using 1 & 2 as obviously I have no values available but it would not "Do It" and if I went back the Meas. Blocks 08 was greyed out so could not get into that.
    So, I took it up the road and after around 15 miles the EML light came on and the Glow Plug Light came on and it went into limp mode. Pulled off, checked the fault code, P2458 Regeneration Not Completed in Time.
    The one thing I have found is the exhaust temperature readings appear to be a bit on the low side?
    Address 01: Engine (03L 906 018 C)

    13:14:24
    IDE00433 Particle filter: oil ash volume 0.00 l
    IDE00434 Particle filter: soot mass calculated 11.48 g
    IDE00435 Particle filter: soot mass measured 26.00 g
    IDE02229 Exh.gas temp.sen 1 287.5 C
    IDE02233 Exh.gas temp.sen 2 -0.0 C
    IDE02234 Exh.gas temp.sen 3 133.6 C
    IDE02236 Exh.gas temp.sen 4 137.3 C

    I am wondering if when trying to regenerate it is injecting more diesel in for combustion but because the exhaust sensors are reading low it is not burning correctly and hence creating excess soot or the DPF not being able to regenerate correctly? You can see the soot has climbed from around the 15g it had got down to up to 26g.
    2012 Skoda Octavia II Estate 2.0Tdi 140PS Manual
    2015 Skoda Octavia III Estate 2.0Tdi 4 x 4 150PS Manual
    2017 VW Sharan 2.0Tdi SE Bluemotion 163PS Manual
    2019 Seat Alhanbra 2.0Tdi LUX Ecomotive 150PS Manual

  2. #2
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    Hi your car has to have exhaust over 200 before regeneration make sure you give it a blast and air con is running too along with lights on
    you should get good results

  3. #3
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    **UPDATE**UPDATE
    Though I would update the forum on where I am at with my DPF issues!
    These came about after having a replacement Turbo & Throttle Body fitted. All was well initially but after a couple of days things started to go wrong. Took it back to the garage, they did another re-generation but the problems returned very quickly. After many 'tests and fixes' with things still not right went back to basics and the start again. Checked the logging of the Throttle Body, Chemically cleaned the DPF using the JML 2 stage system, ran 2 cans of Wynn's Professional EGR Cleaner through the intake system, reset the values of the Oxygen Sensor and DPF Pressure Sensor (as the garage had changed them) and then having 'cleaned' the DPF rest the learned value for a 'Adaption of Carbon Mass' as per the Wiki. After doing that ran a 'Service Re-Generation' through Basic Settings which took around 40 minutes but finally No EML on, No DPF Filter Light On, No 'flashing' Glow Plug Light (other than when the Re-generation was running), good readings for the Soot Levels & Ash Levels with no recorded faults on anything on the Auto Scan so hopefully good for a while?

    Code:
    Sunday,05,July,2020,14:12:20:08428
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 20.4.0.1 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20200331 DS317.0
    www.Ross-Tech.com
    
    
    VIN: TMBGE21Z7C2140161   License Plate: YR12FEP
    Mileage: 312850km-194395mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 1Z-SK35 (7N0)
    Scan: 01 03 08 09 10 15 16 17 19 25 42 44 46 52 56 62 72
    
    VIN: TMBGE21Z7C2140161   Mileage: 312850km-194395miles
    
    01-Engine -- 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: OK 0000
    10-Park/Steer Assist -- 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
    42-Door Elect, Driver -- Status: OK 0000
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    56-Radio -- Status: OK 0000
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    -------------------------------------------------------------------------------
    Address 01: Engine (J623-CFHC)       Labels:. 03L-906-018-CFF.clb
       Part No SW: 03L 906 018 C    HW: 03L 906 018 BR
       Component: R4 2.0l TDI   H24 9978  
       Revision: 42H24---    Serial number:               
       Coding: 00190012042500080000
       Shop #: WSC 22007 210 00000
       ASAM Dataset: EV_ECM20TDI01103L906018C 003008
       ROD: EV_ECM20TDI01103L906018C.rod
       VCID: 2A0D056D4C7D279B2D6-807E
    
    No fault code found.
    Readiness: 0 0 0 0 0 
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels:. 1K0-907-379-MK70M.clb
       Part No SW: 1K0 907 379 AK    HW: 1K0 907 379 AK
       Component: MK70 M MASR         0106  
       Revision: 00H35001    
       Coding: 0017665
       Shop #: WSC 73430 790 00083
       VCID: 7BA3F029FFE76E13060-802E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J255)       Labels:| 5K0-907-044.clb
       Part No SW: 3T0 907 044 BK    HW: 3T0 907 044 BK
       Component: Climatronic   H18 0506  
       Revision: 00001007    
       Coding: 0000000002
       Shop #: WSC 73430 790 00083
       ASAM Dataset: EV_Climatronic A01010
       ROD: EV_ClimaAutoBasis_SK35.rod
       VCID: 7CA1F335F669692B0FA-8028
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
       Part No SW: 1K0 937 087 Q    HW: 1K0 937 087 Q
       Component: BCM PQ35  H   110 0651  
       Revision: 00110 AC    
       Coding: 48000AB8A05BB1C04010008011000124430000AE726D81605C8440000040
       Shop #: WSC 73430 790 00083
       VCID: 3FDB4439A77FB2336A8-806A
    
       Subsystem 1 - Part No: 1Z2 955 119 D  Labels: 1KX-955-119.CLB
       Component: Wischer 26011  26  0601 
       Coding: 00D7B7
    
       Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
       Component: RLS 300112 05  54  0403 
       Coding: 0730ED
    
       Subsystem 3 - Part No: 1Z0 951 171 
       Component: Innenraumuebe  008 5101 
    
       Subsystem 4 - Part No: 1K8 951 605 B
       Component: LIN BACKUP HO  H11 9005 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 10: Park/Steer Assist (J446)       Labels:| 5J0-919-475.clb
       Part No SW: 5J0 919 475 A    HW: 5J0 919 475 A
       Component: PARKHILFE 4K  H11 0005  
       Revision: --H11---    Serial number: 32901202501608
       Coding: 10800E
       Shop #: WSC 13765 790 00083
       ASAM Dataset: EV_EPHVA14SKxxx0000 001001
       ROD: EV_EPHVA14SKxxx0000_001.rod
       VCID: 333318099BB766539E0-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 1K0-909-605.lbl
       Part No SW: 1K0 909 605 T    HW: 1K0 909 605 T
       Component: Q4 AIRBAG VW8   020 2300  
       Revision: 05020000    Serial number: 0038PD2UUYT2  
       Coding: 0020788
       Shop #: WSC 73430 790 00083
       VCID: 3D273E31A173A023784-8068
    
       Subsystem 1 - Serial number: 6332MSME6B037507A
    
       Subsystem 2 - Serial number: 6342MSME69630C12B
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
       Part No SW: 5K0 953 521 BL    HW: 5K0 953 569 C
       Component: LENKS.MODUL   015 0140  
       Revision: FF010040    Serial number: 20120126801141
       Coding: 5080140000
       Shop #: WSC 73430 790 00083
       ASAM Dataset: EV_SMLSNGVOLWSXS A01004
       ROD: EV_SMLSNGVOLWS.rod
       VCID: 77ABEC19CF4F4A73628-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
       Part No SW: 1Z0 920 903 SX    HW: 1Z0 920 903 SX
       Component: KOMBI         H06 0608  
       Serial number: 00000000000000
       Coding: 410A00
       Shop #: WSC 39206 001 1048576
       ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04114
       ROD: EV_Kombi_UDS_VDD_RM09_004_SK35.rod
       VCID: 1D67DEB10D33C023584-8048
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
       Part No SW: 7N0 907 530 M    HW: 1K0 907 951 
       Component: J533  Gateway H42 1623  
       Revision:   H42       Serial number: 220112F2003030
       Coding: 352303
       Shop #: WSC 73430 790 00083
       VCID: 3A2D352DBC5D971B5D6-806E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
       Part No SW: 5K0 953 234     HW: 5K0 953 234 
       Component: IMMO          H06 0608  
       Serial number: 00000000000000
       Coding: 000000
       Shop #: WSC 00000 000 00000
       ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03009
       ROD: EV_Immo_UDS_VDD_RM09_VW31.rod
       VCID: 6A8DC56D8CFDE79BED6-803E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MAX3.clb
       Part No SW: 1T0 959 701 AA    HW: 1T0 959 701 AA
       Component: Tuer-SG         009 2120  
       Coding: 0000758
       Shop #: WSC 73430 790 00083
       VCID: 76B5E11DC4C5337B79E-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
       Part No: 1K0 909 144 P
       Component: EPS_ZFLS Kl. 69     3305  
       Revision: 00H22000    
       Shop #: WSC 73430 790 00083
       VCID: 372B2C19834F8A73A28-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MAX3.clb
       Part No SW: 1T0 959 702 S    HW: 1T0 959 702 S
       Component: Tuer-SG         009 2120  
       Coding: 0000758
       Shop #: WSC 73430 790 00083
       VCID: 48C95FE5FEB1F58BDB2-801C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
       Part No SW: 1Z0 035 156 M    HW: 1Z0 035 156 M
       Component: BOLERO        001 0008  
       Revision: -----08S    Serial number: SKZ4Z3M1106732
       Coding: 0D0004000001
       Shop #: WSC 73430 790 00083
       VCID: 3C213335B669A92B4FA-8068
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
       Part No SW: 5K0 959 703 A    HW: 5K0 959 703 A
       Component: Tuer-SG         007 2101  
       Coding: 0000144
       Shop #: WSC 73430 790 1012563
       VCID: 323D1D0D682D6F5B956-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
       Part No SW: 5K0 959 704 A    HW: 5K0 959 704 A
       Component: Tuer-SG         007 2101  
       Coding: 0000144
       Shop #: WSC 73430 790 1012563
       VCID: 33331809973766539E0-8066
    
    No fault code found.
    
    End----------(Elapsed Time: 01:02, VBatt start/end: 12.5V/12.4V)-----------

    Code:
    Address 01,03L 906 018 C,channel IDE00275-Particle filter initialization,adapted from,0 Tkm,to,1 Tkm,
    
    Sunday,05,July,2020,15:05:00:08428
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 20.4.0.1 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20200331 DS317.0
    www.Ross-Tech.com
    
    
    VIN: TMBGE21Z7C2140161   License Plate: YR12FEP
    Mileage: 194396   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
                    Address 01: Engine  (03L 906 018 C)
    
    15:04:34
      IDE00432   Particle filter: time since last regeneration 2831 s
      IDE00433   Particle filter: oil ash volume 0.00 l
      IDE00434   Particle filter: soot mass calculated 0.79 g
      IDE00435   Particle filter: soot mass measured 0.38 g
      IDE00436   Particle filter: kilometers since last regeneration 0 m
    Last edited by Uwe; 07-05-2020 at 05:21 PM. Reason: CODE tags
    2012 Skoda Octavia II Estate 2.0Tdi 140PS Manual
    2015 Skoda Octavia III Estate 2.0Tdi 4 x 4 150PS Manual
    2017 VW Sharan 2.0Tdi SE Bluemotion 163PS Manual
    2019 Seat Alhanbra 2.0Tdi LUX Ecomotive 150PS Manual

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