SCR/DEF fault (2014 4G 2.0 TDI CNHA)

   #1  

~Jonner~

Verified VCDS User
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Location
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VCDS Serial number
C?ID=293061
Hi guys, I'm new to the forum but have had VCDS for a while and have saved myself hundreds of pounds with various repairs so far. Thank you to all the guys who put this amazing system together, I have a loathing for getting ripped off by dealerships and VCDS has been amazing for preventing that. I thought I was verified but I'll post here in the hope that @Uwe notices and perhaps lends a hand.

Context:

MIL on, VCDS shows particulate trap bank 1 fault code

Cleaning fluid applied via pressure pipe and via adblue injector hole, allowed to soak and then engine run at idle as per instructions. Then installed Bosch DPF pressure sensor, ran adaptation and then did Service regen of DPF. Ran for a long time and produced a shed load of stuff from the exhaust. MIL off and soot down to around 5 grams.

Couple of days later, colder weather and AdBlue warning pops up. 650 miles until no restart. Adblue tank took 9-9.5 litres of a fill, car driven about 50 miles and warning disappeared for about 200 more miles of driving. Then, temperature down to about -2 celsius and AdBlue warning comes back on. Have topped off the tank and driven another 200 miles but no resolution this time.

Here is the AutoScan. I don’t have details of the advanced measuring values when the fault first came up. I'll put the Adv measuring values beneath the error codes at the bottom of this post.

My thinking is that it’s a fault with the sensor that tests the AdBlue. Any thoughts? Can that sensor be replaced or is it a case of replacing the whole tank?

Code:
Thursday,14,November,2024,08:30:13:09976
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 24.7.1.0 (x64)
Data version: 20240919 DS356.3
www.Ross-Tech.com


VIN: WAUZZZ4G2EN182624   License Plate:
Mileage: 93271km-57955mi   Repair Order:



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


Chassis Type: 4G-AU57 (4G0)
Scan: 01 02 03 05 08 09 10 15 16 17 19 3B 42 44 46 52 53 55 56 5F
          62 6C 6D 72 85 8E AC

VIN: WAUZZZ4G2EN182624   Mileage: 93271km-57955miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- 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
3B-Sensor Elect. -- 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
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
5F-Information Electr. -- Status: Malfunction 0010
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
85-On Board Cam. -- Status: OK 0000
8E-Image Processing -- Status: OK 0000
AC-Reductant Control -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CNHA)       Labels:. 04L-907-309-V1.clb
   Part No SW: 04L 906 021 BD    HW: 04L 907 309
   Component: R4 2,0L EDC   H23 8244 
   Revision: 85H23---    CVN: 4E6FCE80C2AAFDD538D3FF82
   Coding: 12254012242401080000
   Shop #: WSC 53147 001 1048576
   ASAM Dataset: EV_ECM20TDI01104L906021BD 002005
   ROD: EV_ECM20TDI01104L906021BD_002.rod
   VCID: 68D861CD935523D663-803C
   VINID: 9D196AAAA1170957812021821086D61775

2 Faults Found:
19226 - Particulate Trap Bank 1
          P2002 00 [00100111] - Efficiency Below Threshold
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 93226 km
                    Date: 2024.11.14
                    Time: 07:36:48

                    Engine RPM: 2266.50 /min
                    Normed load value: 52.9 %
                    Vehicle speed: 90 km/h
                    Coolant temperature: 70 °C
                    Intake air temperature: 80 °C
                    Ambient air pressure: 1030 mbar
                    Voltage terminal 30: 14.340 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 3.040
                    Differential pressure ratio: low-pressure EGR: 56.3 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 97.5 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 98.7 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 67.50 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 98.28 %
                    Exh. gas recirc. 2: diff. press. sensor 1 bank 1: dyn. value: 97.8 hPa

28653 - Reductant System Performance Bank 1
          P204F 00 [00100111] - Malfunction
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 93253 km
                    Date: 2024.11.14
                    Time: 08:03:45

                    Engine RPM: 1436.50 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 57 km/h
                    Coolant temperature: 91 °C
                    Intake air temperature: 88 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.460 V
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 37.7 kg/h
                    Outside temperature sensor 1: B1: raw value: 6.0 °C
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 99.71 %
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 99.33 %
                    NOx sensor before SCR cat conv: NOx emiss: 59 ppm
                    NOx sensor before SCR cat conv: offset correction factor: 8 ppm
                    Current temperature with NOx Reduction CAT: 290.7 °C

Readiness: 0 0 0 0 0

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:| 0CJ-927-156.clb
   Part No SW: 4G0 927 153     HW: 0CK 927 156 P
   Component: 0CK 20TDI RdW H02 0008 
   Revision: --H02---    Serial number: 0000000201 CVN: C293F70C
   Coding: 000001
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_TCMDL382021 002020
   ROD: EV_TCMDL382021_AU57.rod
   VCID: 66C46FF5994135A651-8032

   MTF pump:
   Subsystem 1 - Part No SW: 0CK 927 152 AA    HW: 0CK 321 281 G
   Component: V553 MTFP  HC4 0403
   Serial number: S2AG75.085_04 11   

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 4G0-907-379-V1.clb
   Part No SW: 4G0 907 379 L    HW: 4G0 907 379 L
   Component: ESP PREMIUM   H09 0450 
   Revision: --------    Serial number: --------------
   Coding: 06A29F016045F980DB00
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_ESPPremiAU57X 004039
   ROD: EV_ESPPremiAU57X_004_AU57.rod
   VCID: 3A7CEB85BD796146C5-806E

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 4H0 907 064 FN    HW: 4H0 907 064 EN
   Component: BCM2 2.0      H36 0551 
   Revision: 00002001   
   Coding: 01B93046000000000000
   Shop #: WSC 02391 785 00200
   VCID: 7AFC2B85F5F9A14685-802E

   Subsystem 2 - Part No SW: 4H0 905 852 C    HW: 4H0 905 852 C
   Component: J764 ELV MLB  H40 0046
   Serial number: 0214000122896005   

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:| 4G0-820-043-2Z.clb
   Part No SW: 4G0 820 043 BB    HW: 4G0 820 043 BB
   Component: KLIMA 2 ZONEN H14 0096 
   Serial number: 01071400111796
   Coding: 3422090825
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirCondiBasisUDS 004002
   ROD: EV_AirCondiBasisUDS_004.rod
   VCID: 60C879ED7B655B96AB-8034

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 4H0-907-063-V1.clb
   Part No SW: 4H0 907 063 CF    HW: 4H0 907 063 F
   Component: BCM1 2.0      H12 0130 
   Revision: 20012002    Serial number: 00000001904384
   Coding: 2600201040349FE00181008300001D0C0F9DC70827090201000004606100
   Shop #: WSC 02391 785 00200
   VCID: 6ED417D5B9B1FDE629-803A

   Subsystem 1 - Part No SW: 4G2 955 119     HW: 4G8 955 119 A  Labels: 1KX-955-119.CLB
   Component: WWS57X 140619  H37 0080
   Serial number:         140630055747
   Coding: 0045F7

   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0002
   Serial number: 22850442           
   Coding: 02006D

   Subsystem 3 - Part No SW: 4G0 941 531 BE    HW: 4G0 941 531 BE
   Component: E1 - LDS  H07 0044
   Serial number: 30 06 2014  00000885

   Subsystem 4 - Part No SW: 4G0 907 658 A    HW: 4G0 907 658 A
   Component: Humidity_Sens  H03 0002
   Serial number: 1909C637000000000001

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:| 4H0-919-475-7X2.clb
   Part No SW: 4H0 919 475 AA    HW: 4H0 919 475 AG
   Component: PARKHILFE ACC H01 0083 
   Revision: 11001001    Serial number: 61061419000919
   Coding: A8E308
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_EPHVA18AU57X0000 004009
   ROD: EV_EPHVA18AU57X0000_004.rod
   VCID: 71EE0CA9A08FE21E34-8024

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:* 4H0-959-655.clb
   Part No SW: 4H0 959 655 C    HW: 4H0 959 655 C
   Component: Airbag10.43   H43 0040 
   Revision: --------    Serial number: 003JG00JJDSV Dataset Number: 4G0909602H  0002
   Coding: 3032343631324E303235554A305234473053
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirbaAU10BPAAU64X 001014
   ROD: EV_AirbaAU10BPAAU64X_VW51.rod
   VCID: 3664FFB58961852621-8062

   Crash sensor for side airbag: driver side:
   Serial number: 3575HRB405F2M4PG6P1S

   Front Passenger's Side Airbag Crash Sensor:
   Serial number: 3585HRB405T2M4P8BOD8

   Rear Side Airbag Crash Sensor (on driver's side):
   Serial number: 3515JRB405J2SIIA687O

   Passenger side rear thorax airbag crash sensor:
   Serial number: 3525JRB405L2SIIAOOS$

   Crash sensor for front airbag: driver side:
   Serial number: 3554VRB404V2SLK450A0

   Crash sensor for front airbag: front passenger side:
   Serial number: 3564VRB400K52LJONHMT

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 4H0-953-568.clb
   Part No SW: 4H0 953 568 G    HW: 4H0 953 568 G
   Component: Lenks.Modul   H04 0005 
   Revision: --------    Serial number: 90372NFT00092
   Coding: 0000F5
   Shop #: WSC 02391 785 00200
   VCID: 377AF2B1866B7C2E3A-8062

   Subsystem 1 - Part No SW: 4G0 951 528 A    HW: 4G0 951 528 A
   Component: E221 - MFL  H08 0010
   Serial number: 19 06 2014  10056293

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 4H0-920-xxx-17.clb-SRI1
   Part No SW: 4G8 920 984 H    HW: 4G8 920 984 H
   Component: TDieGb        H58 0622 
   Revision: 29460237    Serial number: 658040714596019
   Coding: 33A612000B512600010000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RBD4K 004048
   ROD: EV_RBD4K_AU57.rod
   VCID: 3B72EE81B243584EDE-806E

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 4H0-907-468.clb
   Part No SW: 4G0 907 468 AD    HW: 4G0 907 468 AC
   Component: J533--Gateway H13 0050 
   Revision: --------    Serial number: 00000001467409 Dataset Number: 4G0909515H  0067
   Coding: 00CD074400
   Shop #: WSC 02391 785 00200
   GVL: FDA1E800DEE360034000
   ASAM Dataset: EV_GatewPkoUDS 001019
   ROD: EV_GatewPkoUDS_001_AU57.rod
   VCID: 72EC03A5A589D906CD-8026

   Battery Monitoring Control Module:
   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181
   Component: J367-BDMHella  H03 8041
   Serial number: 6962213703         

   Voltage stabilizer:
   Subsystem 2 - Part No SW: 8K0 959 663 D    HW: 8K0 959 663
   Component: J532_DCDCStab  H23 0021
   Serial number: 14050100000000000147

No fault code found.

-------------------------------------------------------------------------------
Address 3B: Sensor Elect. (J849)       Labels: 4G0-907-637.clb
   Part No SW: 4G0 907 637 K    HW: 4G0 907 637 F
   Component: SARA 6D       H03 0056 
   Revision: --------    Serial number: EJ1BPA8207TPCY Dataset Number: 4G0909573C  0006
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_SARA2 005012
   ROD: EV_SARA2.rod
   VCID: 3664FFB58961852621-8062

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 4H0-959-793.clb
   Part No SW: 4G8 959 793 J    HW: 4G8 959 793 G
   Component: TSG FA        H03 0507 
   Revision: --------    Serial number: --------------
   Coding: 011C16004001620002080002
   Shop #: WSC 02391 785 00200
   VCID: 479A8271F68B0CAE4A-8012

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 4G0-909-144.clb
   Part No SW: 4G0 909 144 M    HW: 4G0 909 144 G
   Component: RCEPS         H41 0011 
   Revision: 00001000    Serial number: 0025715191 Dataset Number: 4G0909852K  0030
   Coding: 101001010000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RCEPS 009010
   ROD: EV_RCEPS_009.rod
   VCID: 3362C6A19A13900E06-8066

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 4H0-907-064-46.clb
   Part No SW: 4H0 907 064 FN    HW: 4H0 907 064 EN
   Component: BCM2 2.0      H36 0551 
   Revision: 00002001    Serial number: 0340105569   
   Coding: 013F0622A0B930008320090400010F470000000000000000000000000000
   Shop #: WSC 02391 785 00200
   VCID: 7AFC2B85F5F9A14685-802E

   Subsystem 1 - Part No: 4G0 951 177
   Component: DWA-Sensor  H01 0010

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 4H0-959-792.clb
   Part No SW: 4G8 959 792 J    HW: 4G8 959 792 G
   Component: TSG BF        H03 0507 
   Revision: --------    Serial number: --------------
   Coding: 011C16004001620002080002
   Shop #: WSC 02391 785 00200
   VCID: 46848F75F18115A6B1-8012

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 4H0-907-801.clb
   Part No SW: 4H0 907 801 H    HW: 4H0 907 801 A
   Component: EPB-4         H04 0015 
   Revision: --------    Serial number: 00000001119339 Dataset Number: 4G0909522D  0007
   ASAM Dataset: EV_ParkiBrake 001028
   ROD: EV_ParkiBrake_VW51.rod
   VCID: 2D56D0D97C37C6FE50-8078

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range (J431)       Labels:| 8X0-907-357.clb
   Part No SW: 4H0 907 357 B    HW: 4H0 907 357 B
   Component: ....LWR12.... H02 0010 
   Serial number: 140707-0002-170
   Coding: 112296101000A300
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_HeadlRegulBasic 005001
   ROD: EV_HeadlRegulBasic.rod
   VCID: 2D56D0D97C37C6FE50-8078

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (R)       Labels:. 4F0-035-0xx-56.clb
   Part No SW: 4G0 035 061 N    HW: 4G0 035 061
   Component: Radio U DAB   H60 0139 
   Revision: AB001007    Serial number: 109G50E7946159
   Coding: 010103020100000001
   Shop #: WSC 02391 785 00200
   VCID: 285821CD5BD5E3D6A3-807C

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:. 4E0-035-6xx-5F.clb
   Part No SW: 4G0 035 670 M    HW: 4G0 035 670 J
   Component: H-BNT-EU      H53 0814 
   Revision: --------    Serial number: 190G%0EB007359
   Coding: 050101010003A1EF0D80CB3E00000003000001000000000000
   Shop #: WSC 02391 785 00200
   VCID: 2D56D0D97437C6FE50-8078

   Subsystem 1 - Part No: 8R0 060 884 BT
   Component: EUR 2014  1903

   Subsystem 2 - Part No SW: 4G0 919 605 C    HW: 4G0 919 605 C
   Component: DU8 C7 SV  H43 0021
   Serial number: AUZ8ZDED0050K8J     

   Subsystem 3 - Part No SW: 4G2 919 610 C    HW: 4G2 919 610 C
   Component: E380 BDT C7  H11 0204
   Serial number: 90349NG20008Z       

   Subsystem 4 - Part No: 8R0 060 961 G
   Component: CD-Database  5950

1 Fault Found:
01524 - Antenna for Telephone
            011 - Open Circuit
             Freeze Frame:
                    Fault Status: 01101011
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 167
                    Mileage: 93220 km
                    Time Indication: 0
                    Date: 2024.11.13
                    Time: 09:46:46

             Freeze Frame:
                    Voltage: 11.80 V


-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 4H0-959-795.clb
   Part No SW: 4G8 959 795 J    HW: 4G8 959 795 G
   Component: TSG HL        H03 0507 
   Revision: --------    Serial number: --------------
   Coding: 010814004001620002080002
   Shop #: WSC 02391 785 00200
   VCID: 499E8449E09FFADE5C-801C

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 4H0-907-441.clb
   Part No SW: 4G0 907 441 B    HW: 4H0 907 441
   Component: SG Rueckfahrkamera  0061 
   Revision: --H08---    Serial number: 525 PA8J46G25X
   Coding: 1080005
   Shop #: WSC 02391 785 00200
   VCID: 26442FF591C1F5A691-8072

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (----)       Labels:| 7N0-959-107.clb
   Part No SW: 4G9 959 107 B    HW: 4G9 959 107 A
   Component: HDSG-Modul    H03 0143 
   Revision: 14003001    Serial number: 178401243 Dataset Number: 4G0909541D  0027
   Coding: 097205C010
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_HDSGAu572 001022
   ROD: EV_HDSGAu571_AU57.rod
   VCID: 3566F8B994678E3E28-8060

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 4H0-959-795.clb
   Part No SW: 4G8 959 795 J    HW: 4G8 959 795 G
   Component: TSG HR        H03 0507 
   Revision: --------    Serial number: --------------
   Coding: 010814004001620002080002
   Shop #: WSC 02391 785 00200
   VCID: 499E8449E09FFADE5C-801C

No fault code found.

-------------------------------------------------------------------------------
Address 85: On Board Cam. (J852)       Labels:| 7P6-907-217.clb
   Part No SW: 4G0 907 217 A    HW: 4H0 907 217 A
   Component: DPC-SG        H27 0038 
   Revision: --------    Serial number: 262130025421000 Dataset Number: 4G0909547C  0030
   Coding: 62040000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_OnBoardCamerDPC 001007
   ROD: EV_OnBoardCamerDPC.rod
   VCID: 26442FF559C1F5A691-8072

No fault code found.

-------------------------------------------------------------------------------
Address 8E: Image Processing (J851)       Labels:| 4H0-907-107-V2.clb
   Part No SW: 4G0 907 107 E    HW: 4H0 907 107
   Component: BV-SG         H32 0041 
   Serial number: 005000120307147 Dataset Number: 4G0909548F  0029
   Coding: 044228181111
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_BC7 001001
   ROD: EV_BC7.rod
   VCID: 285821CD53D5E3D6A3-807C

No fault code found.

-------------------------------------------------------------------------------
Address AC: Reductant Control (J880)       Labels: 4G0-907-355.clb
   Part No SW: 4G0 907 355 C    HW: 4G0 907 355 B
   Component: SCR-Stg-G2    H10 0010 
   Revision: 00000000    Serial number: 141640246 Dataset Number: 4G0909571F  0014
   ASAM Dataset: EV_RDCMA00100 008040
   ROD: EV_RDCMA00100.rod
   VCID: 2B52DEC14223C8CE4E-807E

No fault code found.

End-------------------------(Elapsed Time: 05:22)--------------------------

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


                Address 01: Engine       Labels: 04L-907-309-V1.clb
Control Module Part Number: 04L 906 021 BD    HW: 04L 907 309
  Component and/or Version: R4 2,0L EDC   H23 8244
           Software Coding: 12254012242401080000
            Work Shop Code: WSC 53147 001 1048576
              ASAM Dataset: EV_ECM20TDI01104L906021BD 002005 (AU57)
                       ROD: EV_ECM20TDI01104L906021BD_002.rod
                      VCID: 68D861CD935523D663-803C
2 Faults Found:

19226 - Particulate Trap Bank 1
          P2002 00 [00100111] - Efficiency Below Threshold
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 93226 km
                    Date: 2024.11.14
                    Time: 07:36:48

                    Engine RPM: 2266.50 /min
                    Normed load value: 52.9 %
                    Vehicle speed: 90 km/h
                    Coolant temperature: 70 °C
                    Intake air temperature: 80 °C
                    Ambient air pressure: 1030 mbar
                    Voltage terminal 30: 14.340 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 3.040
                    Differential pressure ratio: low-pressure EGR: 56.3 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 97.5 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 98.7 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 67.50 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 98.28 %
                    Exh. gas recirc. 2: diff. press. sensor 1 bank 1: dyn. value: 97.8 hPa

28653 - Reductant System Performance Bank 1
          P204F 00 [00100111] - Malfunction
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 93253 km
                    Date: 2024.11.14
                    Time: 08:03:45

                    Engine RPM: 1436.50 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 57 km/h
                    Coolant temperature: 91 °C
                    Intake air temperature: 88 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.460 V
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 37.7 kg/h
                    Outside temperature sensor 1: B1: raw value: 6.0 °C
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 99.71 %
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 99.33 %
                    NOx sensor before SCR cat conv: NOx emiss: 59 ppm
                    NOx sensor before SCR cat conv: offset correction factor: 8 ppm
                    Current temperature with NOx Reduction CAT: 290.7 °C


Readiness: 0 0 0 0 0

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


                Address 01: Engine       Labels: 04L-907-309-V1.clb
Control Module Part Number: 04L 906 021 BD    HW: 04L 907 309
  Component and/or Version: R4 2,0L EDC   H23 8244
           Software Coding: 12254012242401080000
            Work Shop Code: WSC 53147 001 1048576
              ASAM Dataset: EV_ECM20TDI01104L906021BD 002005 (AU57)
                       ROD: EV_ECM20TDI01104L906021BD_002.rod
                      VCID: 68D861CD935523D663-803C
2 Faults Found:

19226 - Particulate Trap Bank 1
          P2002 00 [00100111] - Efficiency Below Threshold
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 93226 km
                    Date: 2024.11.14
                    Time: 07:36:48

                    Engine RPM: 2266.50 /min
                    Normed load value: 52.9 %
                    Vehicle speed: 90 km/h
                    Coolant temperature: 70 °C
                    Intake air temperature: 80 °C
                    Ambient air pressure: 1030 mbar
                    Voltage terminal 30: 14.340 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 3.040
                    Differential pressure ratio: low-pressure EGR: 56.3 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 97.5 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 98.7 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 67.50 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 98.28 %
                    Exh. gas recirc. 2: diff. press. sensor 1 bank 1: dyn. value: 97.8 hPa

28653 - Reductant System Performance Bank 1
          P204F 00 [00100111] - Malfunction
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 93253 km
                    Date: 2024.11.14
                    Time: 08:03:45

                    Engine RPM: 1436.50 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 57 km/h
                    Coolant temperature: 91 °C
                    Intake air temperature: 88 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.460 V
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 37.7 kg/h
                    Outside temperature sensor 1: B1: raw value: 6.0 °C
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 99.71 %
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 99.33 %
                    NOx sensor before SCR cat conv: NOx emiss: 59 ppm
                    NOx sensor before SCR cat conv: offset correction factor: 8 ppm
                    Current temperature with NOx Reduction CAT: 290.7 °C


Readiness: 0 0 0 0 0

Fault codes:

Code:
Tuesday,12,November,2024,17:27:35:09976
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 24.7.1.0 (x64)
Data version: 20240919 DS356.3
www.Ross-Tech.com


VIN: WAUZZZ4G2EN182624   License Plate: 



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


                Address 01: Engine       Labels: 04L-907-309-V1.clb
Control Module Part Number: 04L 906 021 BD    HW: 04L 907 309
  Component and/or Version: R4 2,0L EDC   H23 8244
           Software Coding: 12254012242401080000
            Work Shop Code: WSC 53147 001 1048576
              ASAM Dataset: EV_ECM20TDI01104L906021BD 002005 (AU57)
                       ROD: EV_ECM20TDI01104L906021BD_002.rod
                      VCID: 68D861CD935523D663-803C
2 Faults Found:

19226 - Particulate Trap Bank 1
          P2002 00 [11101101] - Efficiency Below Threshold
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 4
                    Mileage: 93103 km
                    Date: 2024.11.09
                    Time: 16:56:42

                    Engine RPM: 1845.50 /min
                    Normed load value: 29.0 %
                    Vehicle speed: 35 km/h
                    Coolant temperature: 71 °C
                    Intake air temperature: 53 °C
                    Ambient air pressure: 1020 mbar
                    Voltage terminal 30: 14.480 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 3.039
                    Differential pressure ratio: low-pressure EGR: 24.0 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 37.5 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 37.8 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 80.55 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 40.78 %
                    Exh. gas recirc. 2: diff. press. sensor 1 bank 1: dyn. value: 36.8 hPa

28653 - Reductant System Performance Bank 1
          P204F 00 [01100101] - Malfunction
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 93123 km
                    Date: 2024.11.12
                    Time: 07:30:02

                    Engine RPM: 1592.50 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 93 km/h
                    Coolant temperature: 79 °C
                    Intake air temperature: 57 °C
                    Ambient air pressure: 1030 mbar
                    Voltage terminal 30: 14.460 V
                    Unlearning counter according OBD: 40
                    Air mass at air mass meter 1: 43.8 kg/h
                    Outside temperature sensor 1: B1: raw value: 5.0 °C
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Actual value: 99.68 %
                    Exh.recircul.valve 1 bank 1: pos.feedback - Actual value: 99.22 %
                    NOx sensor before SCR cat conv: NOx emiss: 87 ppm
                    NOx sensor before SCR cat conv: offset correction factor: 3 ppm
                    Current temperature with NOx Reduction CAT: 286.6 °C


Readiness: 1 1 0 0 0

Adv. Measuring Values:

Pressure sensor for reducing agent: measured pressure 4986 hPa
Sensor for reducing tank temperature: temperature 2.3 C (correlated with outside temp at the time)
Pressure sensor for reducing agent: voltage 2810 mV
Reducing agent quality sensor: urea concentration 0.0%

For info, I used a new can of Redex AdBlue to refill.

@Crasher @alexnoe

Many Thanks for taking the time to read this and for your thoughts, Jonathan.
 
   #2  

Dr Sheldon

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28653 - Reductant System Performance Bank 1
Hmmm

Is that a blocked Injector ?? Bad NOx Cat - If it has one ??

What else would affect "Performance" ??
 
   #3  

Crasher

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Dribbling reductant injector blocking the DPF, causes havoc, 04L 131 113 S genuine only and £591.60... enough to make a Scotsman cry ;)

Getting the DPF out to clean it is a sketch, it is HUGE and you have to move the engine over to the left.

52972418800_be4aa6fd8a_w.jpg


The whole assembly gets blocked solid with roasted urine crystals, when you have grit like crystals in the tailpipe trims it is a bad sign.

This is the EGR cooler off one. (Trypophobia warning)

52972382655_485f24c54c_w.jpg


52972143724_423dec037c_w.jpg
 
Last edited:
   #4  

~Jonner~

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Thanks very much guys and thanks for the detailed reply @Crasher. This is grim news indeed! It would explain why the DPF keeps throwing a MIL light a day after every regen. Soot was at 11 grams, regen'd it and then MIL light cam back on after another 100 miles.

Any idea why the sensor for urea is at 0%? Would that be tied in with the other faults?
 
   #7  

Crasher

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The injector duty will be at zero due to the reluctant system fault as the engineers would know the fluid would accumulate and solidify in that scenario.
 
   #8  

~Jonner~

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Thanks again @Crasher, to add confusion, the warning has disappeared again today, I was down to 200 miles of driving left before no restart and the warning has spontaneously disappeared. Bizarre. Temps a bit higher again.

I had resigned myself to a full DPF and AdBlue delete to the tune of £900 but am now not too sure about whether this problem is just an inevitability or WTF is going on!

Any thoughts? Could any of this be related to low battery voltage? I think it's on the same battery since new, making it 10 years old and it can be a slightly reluctant starter on a cold morning. I feel like there's enough objective evidence that it's not that though.
 
   #9  

Crasher

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That is a taboo subject on here (banned on a forum I run), is illegal and an MOT failure, in principle :banghead:
 
   #10  

~Jonner~

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Righto, thanks @Crasher

Heading in to get the bits replaced this week. Many thanks for everyone's input.

What is really criminal is that VAG sell these vehicles at huge cost with such a defective system in place and then tell you to do one when it fails.
 
   #11  

Crasher

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They only fit them because unelected Eurotwats made them because unelected environutters forced memeber states to push for Diesel 25 years ago to "save the planet" only to realise about 15 years later the resultant fumes were killing people so they slapped a Bandaid fix on the back of the engine; they should have stopped at Euro 5 Diesel and allowed the progress of time to make the DPF more reliable and less prone to being rodded out... better still, ban small Diesels or shoot the unelected Eurotwats, maybe both?
 
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