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Thread: 3.0 TDI P0172, bank 1 too Rich.

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  1. #1
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    3.0 TDI P0172, bank 1 too Rich.

    Hi everyone, I'm trying to diagnose the P0172 code on a 2009 Touareg 3.0 TDI with 130k miles. I've Smoke tested the vacuum lines, quite a bit of smoke coming out of the crankcase when smoking the Intake, it seems excessive. Could I have an PCV issue? Fuel pump pressures seem fine.
    Air filter is new.
    Just the single code, nothing else.

    How should I proceed?

    Thank you all.

    Code:
    Thursday,06,June,2019,09:22:35:28500
    VCDS Version: Release 18.9.1 Running on Windows 7 x64
    www.Ross-Tech.com
    
                    Address 01: Engine       Labels: 
    Control Module Part Number: 
      Component and/or Version: 
               Software Coding: 
                Work Shop Code:   
                          VCID: 55E903051C07A3EF9DB-5184
    1 Fault Found:
    
    000370 - Fuel Trim; Bank 1 
                   P0172 - 000 - System Too Rich - Intermittent - MIL ON
                 Freeze Frame:
                        Fault Status: 10100000
                        Fault Priority: 2
                        Fault Frequency: 2
                        Reset counter: 255
                        Mileage: 205283 km
                        Time Indication: 0
                        Date: 2019.05.27
                        Time: 09:10:42
    
                 Freeze Frame:
                        RPM: 1848 /min
                        Speed: 93.0 km/h
                        Voltage: 14.52 V
                        Load: 31.0 %
                        Bin. Bits: 00000000
                        Voltage: 1.560 V
                        Voltage: 0.760 V
    
    
    Readiness: N/A

    Code:
    Thursday,06,June,2019,09:29:49:28500
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
    VCDS Version: 18.9.1.0  HEX-NET CB: 0.4437.4
    Data version: 20190114 DS296.0
    www.Ross-Tech.com
    
    
    VIN: WVGFM67L29D035657   License Plate: 
    
    
    Chassis Type: 7L (6N0)
    Scan: 01 02 03 05 08 09 15 16 17 19 22 2E 36 37 46 47 55 56 68 69
              6C 6D 6E 76
    
    VIN: WVGFM67L29D035657   Mileage: 206040km-128027miles
    
    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: Malfunction 0010
    09-Cent. Elect. -- Status: OK 0000
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: Malfunction 0010
    19-CAN Gateway -- Status: Malfunction 0010
    22-AWD -- Status: OK 0000
    2E-Media Player 3 -- Status: OK 0000
    36-Seat Mem. Drvr -- Status: OK 0000
    37-Navigation -- Status: Malfunction 0010
    42-Door Elect, Driver -- Status: OK 0000
    46-Central Conv. -- Status: Malfunction 0010
    47-Sound System -- Status: OK 0000
    52-Door Elect, Pass. -- Status: OK 0000
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: Malfunction 0010
    62-Door, Rear Left -- Status: OK 0000
    68-Wiper Electr. -- Status: OK 0000
    69-Trailer -- Status: OK 0000
    6C-Back-up Cam. -- Status: OK 0000
    6D-Trunk Elect. -- Status: OK 0000
    6E-Ctrl Head Roof -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    76-Park Assist -- Status: OK 0000
    -------------------------------------------------------------------------------
    Address 01: Engine (CAT)       Labels:. 059-907-401-CAT1.clb
       Part No SW: 7L0 907 401 T    HW: 7L0 907 401 K
       Component: 3.0TDI FSA  G004AG  0140  
       Revision: 33H01---    Serial number: VWX3Z0H2826271
       Coding: 0421002A590F0968
       Shop #: WSC 63425 002 1048576
       VCID: 3C3436797E04F3AAC1-5184
    
    1 Fault Found:
    000370 - Fuel Trim; Bank 1 
                   P0172 - 000 - System Too Rich - Intermittent - MIL ON
                 Freeze Frame:
                        Fault Status: 10100000
                        Fault Priority: 2
                        Fault Frequency: 2
                        Reset counter: 255
                        Mileage: 205283 km
                        Time Indication: 0
                        Date: 2019.05.27
                        Time: 09:10:42
    
                 Freeze Frame:
                        RPM: 1848 /min
                        Speed: 93.0 km/h
                        Voltage: 14.52 V
                        Load: 31.0 %
                        Bin. Bits: 00000000
                        Voltage: 1.560 V
                        Voltage: 0.760 V
    
    Readiness: N/A
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 09D-927-750.clb
       Part No SW: 09D 927 750 HN    HW: 09D 927 750 HN
       Component: AL 750 6A           3403  
       Revision: 00H75000    Serial number:               
       Coding: 0004984
       Shop #: WSC 63425 002 1048576
       VCID: 014A878D59665E42D2-5160
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 7L0-907-379-MK25E1.clb
       Part No SW: 7L0 907 379 P    HW: 7L0 614 517 C
       Component: ESP ALLRAD MK25E1   0304  
       Revision: 00H53001    
       Coding: 0004354
       Shop #: WSC 31414 790 00001
       VCID: 46C0549135C8B97AA7-8012
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 05: Acc/Start Auth.        Labels: None
       Part No SW: 7L0 909 135 C    HW: 7L0 909 135 C
       Component:    Kessy            6850  
       Revision: 00H22071    Serial number: VWX3Z0H2826271
       Coding: 0000232
       Shop #: WSC 31414 790 00001
       VCID: 312A174DAC460EC262-8064
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: ELV                 XXXX
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 7L6-907-040.clb
       Part No: 7L6 907 040 AL
       Component: CLIMAtronic R/L     4537  
       Coding: 0003030
       Shop #: WSC 31414 790 00001
       VCID: 7AB8F06131B00D9A93-802E
    
    1 Fault Found:
    00353 - Function Return Message from Fresh Air Blower Regulator 
                002 - Lower Limit Exceeded - Intermittent
                 Freeze Frame:
                        Voltage: 14.60 V
                        Voltage: 4.91 V
                        Voltage: 0.00 V
                        Voltage: 14.00 V
    
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels:. 7Lx-937-049-V2.clb
       Part No SW: 7L6 937 049 AF    HW: 7L6 937 049 AF
       Component: J519                2004  
       Revision: -0004---    Serial number: --------------
       Coding: 230008002F00BC000000000000000000
       Shop #: WSC 31414 790 00001
       VCID: 004C8289576C574ADD-8054
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 7L0-959-655.lbl
       Part No SW: 7L0 959 655     HW: 7L0 959 655 
       Component: J234__3V VW8T       0250  
       Revision: 92012025    Serial number: 0039P0073MG%  
       Coding: 0013142
       Shop #: WSC 31414 790 00001
       VCID: 7AB8F06131B00D9A93-802E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 7L6-953-549.lbl
       Part No: 7L6 953 549 G
       Component: J527                3601  
       Coding: 0010211
       Shop #: WSC 31414 790 00001
       VCID: 43C64D8506FA8C5280-8016
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 7L6-920-xxx-7L6.lbl
       Part No SW: 7L6 920 890 P    HW: 7L6 920 890 P
       Component: J285 KOMBI-INST.    9733  
       Revision: KHH06V42    
       Coding: 0007301
       Shop #: WSC 31414 067 57207
       VCID: 45C2539D0CCEB262AE-8010
    
    1 Fault Found:
    00470 - Company Comfort Databus in Single Wire 
                011 - Open Circuit
                 Freeze Frame:
                        Fault Status: 01101011
                        Fault Priority: 2
                        Fault Frequency: 22
                        Reset counter: 207
                        Mileage: 205106 km
                        Time Indication: 0
                        Date: 2019.05.16
                        Time: 00:00:03
    
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels:. 6N0-909-901-7L.clb
       Part No SW: 6N0 909 901     HW: 7L6 920 890 P
       Component: J533  GW-K-CAN TP20 9733  
       Coding: 77E2EFDB4B846002
       Shop #: WSC 31414 067 57207
       VCID: 70ACD24963CC47CA2D-8024
    
    1 Fault Found:
    00470 - Company Comfort Databus in Single Wire 
                011 - Open Circuit
                 Freeze Frame:
                        Fault Status: 01101011
                        Fault Priority: 2
                        Fault Frequency: 22
                        Reset counter: 207
                        Mileage: 205106 km
                        Time Indication: 0
                        Date: 2019.05.16
                        Time: 00:00:03
    
    
    -------------------------------------------------------------------------------
    Address 22: AWD        Labels: None
       Part No: 0AD 927 755 BG
       Component: TRANSFERCASE        0126  
       Shop #: WSC 00000 000 00000
       VCID: 014A878D59665E42D2-5184
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 2E: Media Player 3
    Cannot be reached
    
    -------------------------------------------------------------------------------
    Address 36: Seat Mem. Drvr        Labels: None
       Part No: 7L0 959 760 
       Component: Sitzverstellung     0702  
       Shop #: WSC 00000 000 00000
       VCID: 77BEE95502A210F2EC-8022
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 37: Navigation (J0506)       Labels:. 1T0-035-680.clb
       Part No SW: 7L6 035 684 C    HW: 7L6 035 684 C
       Component: RNS-MID       H02 0382  
       Revision: AB001001    Serial number: VWZ6Z7K9083182
       Coding: 200500000100002600
       Shop #: WSC 93008 999 67494
       VCID: 36202451812829FA37-8062
    
    2 Faults Found:
    02635 - Tuner Not Enabled/Activated 
                000 -  - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 7
                        Fault Frequency: 254
                        Reset counter: 207
                        Mileage: 199392 km
                        Time Indication: 0
                        Date: 2019.01.03
                        Time: 09:22:05
    
    00862 - Antenna for GPS Navigation (R50/R52) 
                007 - Short to Ground - Intermittent
                 Freeze Frame:
                        Fault Status: 00100000
                        Fault Priority: 5
                        Fault Frequency: 1
                        Reset counter: 247
                        Mileage: 203242 km
                        Time Indication: 0
                        Date: 2019.04.09
                        Time: 11:10:49
    
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 7L0-959-933.lbl
       Part No: 7L6 959 933 A
       Component: 4M HSG              0601  
       Coding: 0000085
       Shop #: WSC 31414 790 00001
       VCID: 40CC428912EC974A9D-4B1E
    
       Subsystem 1 - Part No: 7L0 959 701 N
       Component: Tuersteuergeraet FS 6304
    
       Subsystem 2 - Part No: 7L0 959 702 N
       Component: Tuersteuergeraet BF 6304
    
       Subsystem 3 - Part No: 7L0 959 703 C
       Component: Tuersteuergeraet HL 0201
    
       Subsystem 4 - Part No: 7L0 959 704 C
       Component: Tuersteuergeraet HR 0201
    
    2 Faults Found:
    00668 - Supply Voltage Terminal 30 
                002 - Lower Limit Exceeded - Intermittent
    00470 - Company Comfort Databus in Single Wire 
                011 - Open Circuit
    
    -------------------------------------------------------------------------------
    Address 47: Sound System        Labels: 7Lx-035-4xx-47.lbl
       Part No SW: 7L6 035 466 C    HW: 7L6 035 466 C
       Component: DSP 10 Kanal        0020  
       Revision: 00H05001    Serial number: 75835000591304
       Shop #: WSC 00000 000 00000
       VCID: 34241E5957543BEA09-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 7L6-907-357-A.lbl
       Part No SW: 7L6 907 357 C    HW: 7L6 907 357 C
       Component: AFS-Steuergeraet    0136  
       Revision: 00H04000    Serial number:               
       Coding: 1290371
       Shop #: WSC 31414 790 00001
       VCID: 3B3635657E0AF492C8-806E
    
       Subsystem 1 - Part No: 7L6 941 329 B  Labels: 3D0-941-329.CLB
       Component: AFS-Lst.-Modul l    0004  
       Coding: 00000019
    
       Subsystem 2 - Part No: 7L6 941 329 B  Labels: 3D0-941-329.CLB
       Component: AFS-Lst.-Modul r    0004  
       Coding: 00000019
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J0506)       Labels:. 1T0-035-680.clb
       Part No SW: 7L6 035 684 C    HW: 7L6 035 684 C
       Component: RNS-MID       H02 0382  
       Revision: AB001001    Serial number: VWZ6Z7K9083182
       Coding: 200500000100002600
       Shop #: WSC 93008 999 67494
       VCID: 36202451812829FA37-8062
    
    2 Faults Found:
    02635 - Tuner Not Enabled/Activated 
                000 -  - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 7
                        Fault Frequency: 254
                        Reset counter: 207
                        Mileage: 199392 km
                        Time Indication: 0
                        Date: 2019.01.03
                        Time: 09:22:05
    
    00862 - Antenna for GPS Navigation (R50/R52) 
                007 - Short to Ground - Intermittent
                 Freeze Frame:
                        Fault Status: 00100000
                        Fault Priority: 5
                        Fault Frequency: 1
                        Reset counter: 247
                        Mileage: 203242 km
                        Time Indication: 0
                        Date: 2019.04.09
                        Time: 11:10:49
    
    
    -------------------------------------------------------------------------------
    Address 68: Wiper Electr.        Labels: 7L0-955-119-V2.clb
       Part No: 7L6 955 119 B
       Component: J400__ Front Wiper  5301  
       Coding: 0001397
       Shop #: WSC 31414 790 00001
       VCID: 393A2F6D7036C682DA-806C
    
       Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
       Component: RLS     180209 054  0402  
       Coding: 00208941
       Shop #: WSC 31414  
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 69: Trailer        Labels: 7L0-907-383-1D2.lbl
       Part No SW: 7L0 907 383 N    HW: 7L0 907 383 N
       Component: J345  Anhaenger     0080  
       Revision: 4A008002    Serial number: 00000117139279
       Coding: 0016386
       Shop #: WSC 00000 000 00000
       VCID: 3FCE41756A12E8B2E4-806A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 6C: Back-up Cam.        Labels: 5N0-907-441.clb
       Part No SW: 7L6 907 441 B    HW: 7L6 907 441 B
       Component: J772__Rearview      0033  
       Revision: 00H13000    Serial number:    PA8 J910223
       Coding: 0110001
       Shop #: WSC 31414 790 00001
       VCID: 34241E5957543BEA09-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 6D: Trunk Elect.        Labels: 7L6-959-107.clb
       Part No SW: 7L6 959 107 B    HW: 7L6 959 107 B
       Component: J605  HECKKLAPPE    1310  
       Revision: --H05---    Serial number: --------043825
       Coding: 0122110
       Shop #: WSC 31414 790 00001
       VCID: 3A3830617130CD9AD3-806E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 6E: Ctrl Head Roof        Labels: None
       Part No SW: 7L6 919 044 AD    HW: 7L6 919 044 AD
       Component: J702  Dachdisplay   0401  
       Revision: 1030006S    Serial number: 00000000110570
       Shop #: WSC 00000 000 00000
       VCID: 79BAEF6D30B606829A-802C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 76: Park Assist        Labels: Redir Fail!
       Part No: 7L0 919 283 F
       Component: 0L Einparkhilfe     1108  
       Shop #: WSC 00000 000 00000
       VCID: 393A2F6D7436C682DA-806C
    
    No fault code found.
    
    End----------(Elapsed Time: 02:25, VBatt start/end: 11.6V/14.2V)-----------
    Last edited by Uwe; 06-06-2019 at 12:01 PM. Reason: CODE tags

  2. #2
    Ross-Tech Employee Jef's Avatar
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    With engine at temp (+80C coolant) and at idle, go to 01-08-001 and field 3 should show fuel rail pressure, make a note of it. Exit out of the ECM, shut engine off. Now back into 01-08-001 and see what the fuel rail pressure does.

    Check compression.
    Jef
    Ross Tech Support Team, Alpha Squad
    Auto-Scan, learn it, love it, live it... then check the fuses.

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  4. #3
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    Thanks Jeff,

    The pressure at idle when warm is 223.6 bar.
    Engine off its 0.0.

  5. #4
    Verified VCDS User golfi_vend's Avatar
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    Too rich on a TDI --- Clogged O2 sensor.
    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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  7. #5
    Ross-Tech Employee Jef's Avatar
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    223.6 BAR of fuel rail pressure at idle seem a bit... excessive. And I would expect rail pressure to be maintained when the engine is off, so 0 BAR doesn't seem good as well.... at face value, leaking injector(s).
    Jef
    Ross Tech Support Team, Alpha Squad
    Auto-Scan, learn it, love it, live it... then check the fuses.

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  9. #6
    NostraJackAss Jack@European_Parts's Avatar
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    I agree with Golfi_vend on the OXS being contaminated & this is pretty common, additionally the ECU is FOD tuned and manifold missing stack data with deletes.
    There is a firmware update.

    Don't trust PSI displayed in controller or vicariously VCDS, verify with mechanical gauge.
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
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