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Thread: AdBlue countdown to doom

  1. #1
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    AdBlue countdown to doom

    Hello all, new VCDS owner here.
    I have the "Check AdBlue, no engine start in 450 miles" message on my Alhambra 7N. The story so far:
    -I've had car about 6 months. In the first week of ownership the same happened and it went to dealer for software updates and came back happy and clear of that problem.
    -Last week I had same countdown start again. "Check" not "Top Up" and starting much lower. I only had a cheap scanner at the time and noted codes P20EE and P229F. Stupidly I cleared them.
    -AdBlue tank is full.
    -I pulled Nox Sensor off as per code above, cleaned it (it didn't look bad) and put it back.
    -I've worked out I stand no chance without VCDS so purchased!
    Here is autoscan:
    Code:
    Tuesday,18,December,2018,12:46:10:38987
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 18.9.0.4 (x64)  HEX-V2 CB: 0.4437.4
    Data version: 20181017 DS296.0
    www.Ross-Tech.com
    
    
    VIN: VSSZZZ7NZBV512733   License Plate: KM11 MHY
    Mileage: 157990km-98170mi   Repair Order: Original
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: 7N-VW36 (7N0)
    Scan: 01 02 03 08 09 10 15 16 17 18 19 20 25 2E 42 44 46 52 53 56
              61 62 72 77
    
    VIN: VSSZZZ7NZBV512733   Mileage: 157990km-98170miles
    
    01-Engine -- Status: OK 0000
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: OK 0000
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: Malfunction 0010
    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
    18-Aux. Heat -- Status: Malfunction 0010
    19-CAN Gateway -- Status: OK 0000
    20-High Beam Assist. -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    2E-Media Player 3 -- 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: Malfunction 0010
    53-Parking Brake -- Status: OK 0000
    56-Radio -- Status: OK 0000
    61-Battery Regul. -- Status: OK 0000
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    77-Telephone -- Status: OK 0000
    -------------------------------------------------------------------------------
    Address 01: Engine (J623-CFGB)       Labels:. 03L-906-018-CFF.clb
       Part No SW: 03L 906 018 L    HW: 03L 906 018 M
       Component: R4 2.0l TDI   H24 9980  
       Revision: 44H24---    Serial number:               
       Coding: 001D001A042501080000
       Shop #: WSC 00000 210 00000
       ASAM Dataset: EV_ECM20TDI01103L906018L 003011
       ROD: EV_ECM20TDI01103L906018F.rod
       VCID: 3333E30DFBBCEC2F539-8066
    
    No fault code found.
    Readiness: 0 0 0 0 0 
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 02E-927-770.clb
       Part No SW: 02E 300 054 R    HW: 02E 927 770 AL
       Component: GSG DSG AG6     511 2603  
       Revision: 05351113    Serial number: 00001103230502
       Coding: 0000020
       Shop #: WSC 00020 000 90108
       VCID: 25170D5549E8829FCDD-8070
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 7N0-614-109.clb
       Part No SW: 7N0 614 109 M    HW: 7N0 614 109 M
       Component: J104   C3 450M VDDF 0009  
       Revision: --H07---    Serial number: 00000004116006
       Coding: 0028295
       Shop #: WSC 00020 790 00000
       VCID: 372BD71DE344000F6F1-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J255)       Labels:| 5K0-907-044.clb
       Part No SW: 5K0 907 044 F    HW: 5K0 907 044 F
       Component: Clima-Sharan  H11 0104  
       Revision: 00002001    
       Coding: 0000000109
       Shop #: WSC 00020 999 00000
       ASAM Dataset: EV_ClimatronicSharan A01005
       ROD: EV_ClimaAutoSharaBasis.rod
       VCID: 2E05F279109EC1C73C7-807A
    
       Slave 1: 
       Subsystem 1 - Part No SW: 7N0 907 049 B    HW: 7N0 907 049 B
       Component: KBT-H  004 0102 
       Serial number: 20110331000000020701
    
    1 Fault Found:
    9479185 - Signal Line for Air Quality Sensor 
              B10A4 11 [008] - Short to Ground
              Intermittent - Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 3
                        Fault Frequency: 3
                        Reset counter: 7
                        Mileage: 157945 km
                        Date: 2018.12.16
                        Time: 09:49:23
    
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
       Part No SW: 5K0 937 086 J    HW: 5K0 937 086 J
       Component: BCM PQ35 M    011 0048  
       Revision: BC011001    
       Coding: 40180A3B8925F1C0400800C81400812443519288426D29626480C72000C1
       Shop #: WSC 00020 790 00000
       VCID: 3B23CB2DD36C246F8B9-806E
    
       Subsystem 1 - Part No SW: 7N2 955 119 A    HW: 7N2 955 119   Labels: 1KX-955-119.CLB
       Component: WWS    110408  31  0032 
       Serial number:         110411160412
       Coding: 004DBD
    
       Subsystem 2 - Part No SW: 7N0 955 559     HW: 7N0 955 559   Labels: 7N0-955-559.CLB
       Component: RLFS  021 0022 
       Serial number: Y11M04D04h23m13s03S1
       Coding: 0380DD
    
       Subsystem 3 - Part No: 7N0 951 171 
       Component: DWA-Sensor 00  002 0205 
       Coding: 000000
    
       Subsystem 4 - Part No: 1K8 951 605 B
       Component: LIN BACKUP HO  9005 
       Coding: 000000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 10: Park/Steer Assist (J446)       Labels:| 1Q0-919-475.clb
       Part No SW: 7N0 919 475     HW: 7N0 919 475 
       Component: PARKHILFE 8K  H04 0010  
       Revision: --------    Serial number: 80231109808683
       Coding: 108102
       Shop #: WSC 00020 999 00000
       ASAM Dataset: EV_EPHVA18VW4280000 001005
       ROD: EV_EPHVA18VW4280000.rod
       VCID: 78A91421A25ACF77A6B-802C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
       Part No SW: 7N0 959 655 B    HW: 7N0 959 655 B
       Component: VW10Airbag01D H07 0013  
       Serial number: 003GFP7MSQ1E
       Coding: 003144
       Shop #: WSC 00020 999 00000
       ASAM Dataset: EV_AirbaVW10TS6VW428 A01002
       ROD: EV_AirbaVW10TS6VW428.rod
       VCID: 3E25C239C0FE3147AC7-806A
    
       Crash sensor for side airbag: driver side: 
       Subsystem 1 - Part No SW: ---            HW: ---        
       Component: S.Sens.Fahr.V  --- ---  
       Serial number: 3493ETS600AD9EB13DDB
       Coding: 000000
    
       Crash sensor for side airbag: front passenger side: 
       Subsystem 2 - Part No SW: ---            HW: ---        
       Component: S.Sens.Beif.V  --- ---  
       Serial number: 3503ETS60DD0DED13DDC
       Coding: 000000
    
       Crash sensor for side airbag: rear: driver side: 
       Subsystem 3 - Part No SW: ---            HW: ---        
       Component: S.Sens.Fahr.H  --- ---  
       Serial number: 3513ETS6033EEEB139D2
       Coding: 000000
    
       Crash sensor for side airbag: rear: passenger side: 
       Subsystem 4 - Part No SW: ---            HW: ---        
       Component: S.Sens.Beif.H  --- ---  
       Serial number: 3523ETS60200EED139DU
       Coding: 000000
    
       Crash sensor for front airbag: driver side: 
       Subsystem 5 - Part No SW: ---            HW: ---        
       Component: F.Sens.Fahr  --- ---  
       Serial number: 35540TS609692F7139DP
       Coding: 000000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
       Part No SW: 5K0 953 521 BD    HW: 5K0 953 569 B
       Component: LENKS.MODUL   014 0140  
       Revision: FF010040    Serial number: 20110416101695
       Coding: 1892240000
       Shop #: WSC 00020 999 00000
       ASAM Dataset: EV_SMLSNGVOLWSXS A01004
       ROD: EV_SMLSNGVOLWS.rod
       VCID: 6FBB2F7DD71488CF771-803A
    
       Multifunction steering wheel control module: 
       Subsystem 1 - Part No SW: 1P0 959 538 B    HW: 1P0 959 538 B  Labels: 3C8-959-537.CLB
       Component: E221__MFL-TAP  H02 0102 
       Coding: E30000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
       Part No SW: 7N5 920 970 A    HW: 7N5 920 970 A
       Component: KOMBI         H20 0420  
       Serial number: 00000000000000
       Coding: 440F00
       Shop #: WSC 00020 999 00000
       ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
       ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
       VCID: 3635DA19E8CEF907747-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 18: Aux. Heat        Labels: 1K0-815-071.clb
       Part No: 7N0 963 271 C
       Component: Zuheizer        051 2730  
       Revision: 00051000    Serial number: 09022126000000
       Coding: 0000041
       Shop #: WSC 00020 790 00000
       VCID: 3431E011F232EB174A3-8060
    
    4 Faults Found:
    00664 - Fuel gauge 
                002 - Lower Limit Exceeded - Intermittent
                 Freeze Frame:
                        Fault Status: 00100010
                        Fault Priority: 7
                        Fault Frequency: 2
                        Reset counter: 235
                        Mileage: 156034 km
                        Time Indication: 0
                        Date: 2013.03.11
                        Time: 08:09:56
    
    01444 - Under-Voltage Shut-Off (Automatic) 
                000 -  -  - Intermittent
                 Freeze Frame:
                        Fault Status: 00100000
                        Fault Priority: 7
                        Fault Frequency: 3
                        Reset counter: 250
                        Mileage: 156321 km
                        Time Indication: 0
                        Date: 2013.03.21
                        Time: 09:37:23
    
    01410 - Heater Over-Temp 
                000 -  - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 210
                        Time Indication: 0
    
                 Freeze Frame:
                            After-Run
                        Temperature: 145.0°C
                        Temperature: -48.0°C
                        Voltage: 12.43 V
    
    02251 - Heater Unit Locked 
                000 -  - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 210
                        Time Indication: 0
    
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
       Part No SW: 7N0 907 530 D    HW: 1K0 907 951 
       Component: J533  Gateway H35 0614  
       Revision:   H35       Serial number: 230411F1002008
       Coding: 468203
       Shop #: WSC 00020 790 00000
       VCID: 313FE9050120DE3F215-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 20: High Beam Assist. (J844)       Labels:. 8K0-857-511.clb
       Part No SW: 7N0 857 511 F    HW: 8P0 857 511 C
       Component: FLA           H04 0006  
       Revision: AA001002    
       Coding: 0102816B74745D545420363E00
       Shop #: WSC 00020 790 00000
       VCID: 3635DA19E84EF907747-8062
    
    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          H20 0420  
       Serial number:               
       Coding: 000000
       Shop #: WSC 00000 000 00000
       ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
       ROD: EV_Immo_UDS_VDD_RM09.rod
       VCID: 6A8D3E69ECF66DE720F-803E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 2E: Media Player 3 (J650)       Labels:. 5N0-035-342.lbl
       Part No SW: 5N0 035 342 D    HW: 5N0 035 342 D
       Component: SG EXT.PLAYER H13 0150  
       Revision: A1001003    Serial number: 7669802271    
       Coding: 010000
       Shop #: WSC 00020 790 00000
       VCID: 2809046132FA9FF7F6B-807C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver (J386)       Labels:. 7N0-959-793.clb
       Part No SW: 7N0 959 793 E    HW: 7N0 959 793 A
       Component: TSG FA        H04 0400  
       Revision:             Serial number: 0000114797135 
       Coding: 01110620D001411011
       Shop #: WSC 00020 790 00000
       VCID: 44D1B0D1AE925B97FA3-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
       Part No: 7N0 909 144 M
       Component: EPS_ZFLS Kl. 275    3201  
       Revision: 00H20000    
       Shop #: WSC 00020 790 00000
       VCID: 3D27C535C1782A5FB5D-8068
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. (J387)       Labels:. 7N0-959-792.clb
       Part No SW: 7N0 959 792 E    HW: 7N0 959 792 A
       Component: TSG BF        H04 0400  
       Revision:             Serial number: 0000114976223 
       Coding: 01110420DE01411011
       Shop #: WSC 00020 790 00000
       VCID: 43D3B3CDAB9C5CAFC39-8016
    
    1 Fault Found:
    02115 - Locking Unit for Central Locking 
                008 - Implausible Signal - Intermittent
                 Freeze Frame:
                        Fault Status: 00101000
                        Fault Priority: 3
                        Fault Frequency: 1
                        Reset counter: 251
                        Mileage: 157123 km
                        Time Indication: 0
                        Date: 2013.04.14
                        Time: 16:22:34
    
    
    -------------------------------------------------------------------------------
    Address 53: Parking Brake        Labels: 3AA-907-801.clb
       Part No SW: 3AA 907 801 E    HW: 3AA 907 801 E
       Component: J540 EPB4  VW-55183 0007  
       Revision:   H18       Serial number: 00000000304139
       Coding: 0024067
       Shop #: WSC 00020 790 00000
       VCID: 3333E30DF73CEC2F539-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
       Part No SW: 7N5 035 186     HW: 7N5 035 186 
       Component: Radio RCD310  H01 0002  
       Revision: 01000001    Serial number: SEZ1Z2L8026625
       Coding: 0100040004
       Shop #: WSC 00020 790 00000
       VCID: 71BF2905C1A09E3F615-8024
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
       Part No SW: 7N0 907 534     HW: 1K0 907 951 
       Component: Batt.regelung H35 0614  
       Serial number: 230411F1002008
       Coding: 030B185A
       Shop #: WSC 00020 790 00000
       VCID: 71BF2905C1A09E3F615-8024
    
       Subsystem 1 - Part No SW: 1K0 915 181 F    HW: 1K0 915 181 A
       Component: J367-BDM  H07 0150 
       Serial number: 00000000009370355121
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left (J388)       Labels:. 7N0-959-794.clb
       Part No SW: 7N0 959 794 E    HW: 7N0 959 795 A
       Component: TSG HL        H03 0400  
       Revision:             Serial number: 0000114892198 
       Coding: 010004200001411001
       Shop #: WSC 00020 790 00000
       VCID: 45D7ADD5A5A8629FEDD-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right (J389)       Labels:. 7N0-959-794.clb
       Part No SW: 7N0 959 794 E    HW: 7N0 959 795 A
       Component: TSG HR        H03 0400  
       Revision:             Serial number: 0000114889906 
       Coding: 010004200001411001
       Shop #: WSC 00020 790 00000
       VCID: 45D7ADD5A5A8629FEDD-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 77: Telephone (J412)       Labels:| 7P6-035-730.clb
       Part No SW: 5K0 035 730 B    HW: 5K0 035 730 B
       Component: TELEFON       H09 1020  
       Revision: 1B001001    Serial number: 00007669811601
       Coding: 0A01010000010110
       Shop #: WSC 00020 999 00000
       ASAM Dataset: UHVNA A01009
       ROD: UHVNA.rod
       VCID: 241110514E527B97DA3-8070
    
    No fault code found.
    
    End----------(Elapsed Time: 01:59, VBatt start/end: 14.6V/14.7V)-----------
    As per other forum posts, I have tried:
    Basic Settings IDE04567 Resetting of SCR tank level detection - completed OK
    Basic Settings IDE04730 Reset SCR lock - completed OK
    Read the UDS block for tank and it reports "Full".
    Then tried:
    Engine > Basic Settings >
    [Reset learned values quant. meter. unit and press. contr. Valve], press [Go!] - completed OK
    [Check of SCR efficiency], went through process, eventually reported "Aborted for Safety Reasons" about about 12 minutes.

    I'd be very grateful for any thoughts on what I might try next, why it might be failing for safety reasons, and specifically some Advanced Measurement Blocks that can help prove that the sensor I cleaned is actually working or shed any more light on what might be causing the issues.
    Another question is that I haven't found the front Nox sensor (if there is one!), I had assumed it was on top of the engine but now think that's the Lambda probe.

    Many thanks for any help
    Tim

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  3. #2
    Benevolent Dictator Uwe's Avatar
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    Ouch. With no fault codes under 01-Engine, combined with the fact that you've done all the Basic Settings, I'm scratching my head how/why this car is producing the "countdown to doom".


    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

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  5. #3
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    I haven't yet got [Check of SCR Efficiency] to complete. I tried again and during the test took the following screenshot
    https://www.dropbox.com/s/m87po46vja...ing%20test.bmp
    The efficiency reaches 0.80 at one point then tails off, and finishes off much lower than this. Can someone confirm that I should be getting some kind of reading from sensor 1, as I can't work out how it can compute efficiency if sensor 1 is coming back as zero! Still haven't found sensor 1 on the car too....!

  6. #4
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    Just to add I do now have a fault code - though not sure it helps
    Code:
    Address 01: Engine (J623-CFGB)       Labels:. 03L-906-018-CFF.clb
       Part No SW: 03L 906 018 L    HW: 03L 906 018 M
       Component: R4 2.0l TDI   H24 9980  
       Revision: 44H24---    Serial number:               
       Coding: 001D001A042501080000
       Shop #: WSC 00000 210 00000
       ASAM Dataset: EV_ECM20TDI01103L906018L 003011
       ROD: EV_ECM20TDI01103L906018F.rod
       VCID: 3333E30DFBBCEC2F539-8066
    
    1 Fault Found:
    15733 - SCR NOx Catalyst Bank 1 
              P20EE 00 [101] - Efficiency too Low
              Not Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 2
                        Fault Frequency: 1
                        Mileage: 158007 km
                        Date: 2018.12.18
                        Time: 18:04:43
    
                        Engine speed: 1500.50 /min
                        Normed load value: 22.4 %
                        Vehicle speed: 0 km/h
                        Coolant temperature: 81 °C
                        Intake air temperature: 34 °C
                        Ambient air pressure: 980 mbar
                        Voltage terminal 30: 13.240 V
                        Unlearning counter according OBD: 40
                        Long-term adaptation of reduction agent dosage: 1.00
                        Measured NOx conversion: 0.000
                        Calculated efficiency of NOx conversion: 0.834
                        Efficiency threshold of NOx conversion: 0.000
                        Current temperature in NOx reducing catalytic converter: 335.4 °C
    
    Readiness: 0 0 0 0 0

  7. #5
    Verified VCDS User golfi_vend's Avatar
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    Code:
    Measured NOx conversion: 0.000
    Either faulty injector, faulty scr converter or nox sensor that doesn't measure Correctly.
    I am a VW Freak - Le WV Freaks OR Come visit me at my work with ODIS concerns - FORSS ODIS GeKo/FaZit access for VW/AUDI/Škoda
    The world is my oyster...

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  9. #6
    NostraJackAss Jack@European_Parts's Avatar
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    Isn't this under warranty?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

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  11. #7
    Verified VCDS User golfi_vend's Avatar
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    Quote Originally Posted by Jack@European_Parts View Post
    Isn't this under warranty?
    Sharan from 2011ish. Even goodwill is about to end on this car(7year).

    We don't get extended warranties on emission systems or get free replacements of intake manifolds.

    Sucks, but this is the way it is
    I am a VW Freak - Le WV Freaks OR Come visit me at my work with ODIS concerns - FORSS ODIS GeKo/FaZit access for VW/AUDI/Škoda
    The world is my oyster...

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  13. #8
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    Quote Originally Posted by golfi_vend View Post
    Code:
    Measured NOx conversion: 0.000
    Either faulty injector, faulty scr converter or nox sensor that doesn't measure Correctly.
    Thank you. As original fault code (cleared) was for P229F for Nox Sensor that feels like most likely at this point. Anyone know any rough values for any given conditions that I can compare?
    I guess I can also pull injector off and get car up to temperature and see what happens. Thanks again for help.

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  15. #9
    NostraJackAss Jack@European_Parts's Avatar
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    Usually the head of the urea injector where it usually explodes and atomizes needs a long good soaked kiss of lubricant and cleaners to loosen things up to get it to pump out of the tank.
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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  17. #10
    Ross-Tech Employee Dana's Avatar
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    I agree with the above suggestions and wouldn't want to overlook that sensor code but wanted to add, advanced measuring value [*IDE03386*] Long-term adaptation of reduction agent dosage may be helpful.

    1.00 = Baseline (center)
    Range = 0.90 to 1.10
    > 1.00 = adding more reducing agent (example 1.02 = clogged injector, High DPF content, etc...)
    < 1.00 = taking away reducing agent (example 0.95 = leaking injector, etc. . )

    I believe Basic Settings [*IDE02636*] SCR metering quantity test would run the self-test so the measurement of adblue can be evaluated (with the injector removed) but our text doesn't match the new IDE scheme. In the event that it helps I'll post it:
    Code:
    Prerequisites:
    - Key on, engine off
    - Battery maintainer on and connected
    - Use of Protective Safety clothing, gloves, goggles, etc.
    - Read and understand information/warnings/safety instruction in the Factory Repair manual about working with and testing the DPF system. 
    
    Using VCDS:
    In [01-Engine]
    - Select [Basic Settings-04]
    - From the 'pull-down' menu
    - Select [SCR metering quantity test]
    
    Next select the following Advanced Measuring Values:
    [Pressure sensor for reducing agent; measured pressure] = loc 429
    [Reducing agent pump; activation] = loc 451
    [Reducing agent purge valve; activation] = loc 452
    
    Start the Basic Settings, watch the pressure reading in the measuring values, DPF system pressure range is [4.8bar to 5.2bar]
    
    - Let the test run for 10 minutes
    - Look for DPF leaks
    - It maybe necessary to remove the N474-Reducing Agent Injector (use VAS6532/2) if the pressure is not reached or there is a suspicion the N474 is leaking.
    - Use the VS6532 pressure gauge and adapters to check for pressure if the Measuring Value Block shows no or incorrect pressure.
    I don't think the locations will be accurate but the text should be similar enough.

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