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Thread: 2009 R32 - high fuel trim on bank 1

  1. #1
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    2009 R32 - high fuel trim on bank 1

    Hello all,

    I have a 2009 R32 on which I've been trying to track down a high partial fuel trim on Bank 1. It varies from around +12 to +19 at the worst.
    Bank 2 sits steady around +7.
    Idle fuel trims for both banks around +0.2

    It's had:
    • New fuel filter
    • New fuel pumps (both)
    • New CTS
    • New MAF
    • New plugs
    • New pre-cat O2 sensors
    • Transposed the coil packs between bank 1 / bank 2


    I'm running out of ideas... Possibly a false lean from an exhaust gasket leaking under load, or maybe a bad injector?

    There aren't any vacuum leaks and the idle trims suggest that to be the case too.

    If any one has any ideas about how to narrow this down further I would be most grateful.

    Cheers!



    Code:
    Friday,08,November,2019,19:09:26:09551
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
    VCDS Version: 19.6.2.0  HEX-V2 CB: 0.4508.4
    Data version: 20190930 DS308.0
    www.Ross-Tech.com
    
    
    VIN: WVWPM51K99W138436   License Plate: 
    Mileage: 173670km-107913mi   Repair Order: 
    
    
    Chassis Type: 1K (1K0)
    Scan: 01 02 03 08 09 15 16 17 19 22 25 42 44 46 52 55 56 62 72 76
             
    
    VIN: WVWPM51K99W138436   Mileage: 173670km-107913miles
    
    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
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: Malfunction 0010
    22-AWD -- 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
    55-Headlight Range -- Status: OK 0000
    56-Radio -- Status: Cannot be reached 1100
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    76-Park Assist -- Status: OK 0000
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 022-906-032-BDB.lbl
       Part No SW: 022 906 032 KJ    HW: 022 906 032 GP
       Component: R32-DQ-EU2      G   0696  
       Revision: 1QH02---    Serial number: VWX7Z0H83NQ7UC
       Coding: 0000178
       Shop #: WSC 00000 000 08192
       VCID: 5DE79A6DE133DA1F821-8008
    
    No fault code found.
    Readiness: 0100 1101
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 02E-927-770.clb
       Part No SW: 02E 300 011 CP    HW: 02E 927 770 AJ
       Component: GSG DSG AG6     431 1812  
       Revision: 04843012    Serial number: 00000804301651
       Coding: 0000020
       Shop #: WSC 01357 011 00200
       VCID: 5F9BA065EB3FC80F90D-800A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (-----)       Labels:. 1K0-907-379-60EC1F.clb
       Part No SW: 1K0 907 379 AP    HW: 1K0 907 379 AP
       Component: ESP MK60EC1   H45 0107  
       Revision: 00H45001    
       Coding: 143B800D09250002280F01E7901F0041B500
       Shop #: WSC 32782 001 1048576
       VCID: 005983193A0157F7C97-8054
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC        Labels: 1K0-907-044.lbl
       Part No SW: 1K0 907 044 DE    HW: 1K0 907 044 DE
       Component: ClimatronicPQ35 130 1213  
       Revision: 00130023    Serial number: 00000000000000
       Shop #: WSC 00000 000 00000
       VCID: 6D87CAAD1193AA9F121-8038
    
    2 Faults Found:
    01810 - Actuating Motor for Temperature Flap; Right (V159) 
                000 - -
    00716 - Air recirculation Flap Positioning Motor (V113) 
                000 - - - Intermittent
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect.        Labels:. 3C0-937-049-30-H.lbl
       Part No SW: 3C8 937 049 E    HW: 3C8 937 049 E
       Component: Bordnetz-SG     H54 2602  
       Revision: 00H54000    Serial number: 00000008917194
       Coding: E68F8B27000415004714000014000000000900005C000100000000000000
       Shop #: WSC 01357 011 00200
       VCID: 33331CD537373C6F045-8066
    
       Subsystem 1 - Part No: 1K1 955 119 E  Labels: 1KX-955-119.CLB
       Component: Wischer 011008 021  0501  
       Coding: 00038805
       Shop #: WSC 01357  
    
       Subsystem 2 - Part No: 1K0 955 559 AH  Labels: 1K0-955-559-AG.CLB
       Component: RLS     061008 054  0402  
       Coding: 00207789
       Shop #: WSC 01357  
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 1K0-909-605.lbl
       Part No SW: 1K0 909 605 AB    HW: 1K0 909 605 AB
       Component: 5F AIRBAG VW8R  034 8000  
       Revision: 05034000    Serial number: 003B6D0C3GV9  
       Coding: 0013638
       Shop #: WSC 01357 011 00200
       VCID: 6C81C7A92A89A39705F-8038
    
       Subsystem 1 - Serial number: 6332MSME4116165A5
    
       Subsystem 2 - Serial number: 6342MSME4162585FI
    
       Subsystem 3 - Serial number: 6352QSME380A352CK
    
       Subsystem 4 - Serial number: 6362QSME700C4F34N
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
       Part No SW: 1K0 953 549 BG    HW: 1K0 953 549 BG
       Component: J0527           051 0101  
       Coding: 0012122
       Shop #: WSC 01357 011 00200
       VCID: 78A9EBF96ED11F37F17-802C
    
       Subsystem 1 - Part No: XXXXXXXXXXX 
       Component: E0221           002 0010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
       Part No SW: 1K6 920 874 B    HW: 1K6 920 874 B
       Component: KOMBIINSTRUMENT VDD 2416  
       Revision: V0002000    Serial number: VWX7Z0H83NQ7UC
       Coding: 0007107
       Shop #: WSC 32785 001 104857
       VCID: 323D19D1C82D35670F3-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels:. 1K0-907-530-V3.clb
       Part No SW: 1K0 907 530 Q    HW: 1K0 907 951 
       Component: J533  Gateway   H07 5063  
       Revision:   H07 01    Serial number: 260908F1001064
       Coding: ED837F0E0002020002
       Shop #: WSC 01357 011 00200
       VCID: 353722CD3943225F2A1-8060
    
    1 Fault Found:
    01304 - Radio 
                004 - No Signal/Communication
                 Freeze Frame:
                        Fault Status: 01100100
                        Fault Priority: 2
                        Fault Frequency: 20
                        Reset counter: 50
                        Mileage: 173572 km
                        Time Indication: 0
                        Date: 2000.00.00
                        Time: 22:29:20
    
    
    -------------------------------------------------------------------------------
    Address 22: AWD        Labels: 1K0-907-554.lbl
       Part No: 1K0 907 554 L
       Component: Haldex 4Motion      0116  
       Coding: 0000001
       Shop #: WSC 00000 000 00000
       VCID: 363525C12445294723B-8062
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
       Part No SW: 1K6 920 874 B    HW: 1K6 920 874 B
       Component: IMMO            VDD 2416  
       Revision: V0002000    Serial number: VWX7Z0H83NQ7UC
       Shop #: WSC 00000 000 00000
       VCID: 323D19D1C82D35670F3-8066
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MAX3.clb
       Part No SW: 1K0 959 701 N    HW: 1K0 959 701 N
       Component: Tuer-SG         006 1219  
       Coding: 0000182
       Shop #: WSC 01357 011 00200
       VCID: 392F2EFD155BC63FCE9-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1Kx-909-144-G2V3.clb
       Part No: 1K1 909 144 M
       Component: EPS_ZFLS Kl.141 H08 1901  
       Shop #: WSC 32782 001 1048576
       VCID: 353722CD3943225F2A1-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels:. 1K0-959-433-MAX.clb
       Part No SW: 1K0 959 433 BT    HW: 1K0 959 433 BT
       Component:    KSG PQ35 G2  020 0204  
       Revision: 00020000    Serial number: 00000000000000
       Coding: 809002005103087F2D0484057008CFC6E0FC00
       Shop #: WSC 01357 011 00200
       VCID: 03538C1527174CEFD45-8056
    
       Subsystem 1 - Component:   Sounder n.mounted     
    
       Subsystem 2 - Part No: 1K0 951 178 A
       Component: Neigungssensor  003 0203
    
       Subsystem 3 - Part No: 1K0 951 178 A
       Component: Innenraumueberw.003 0203
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MAX3.clb
       Part No SW: 1K0 959 702 N    HW: 1K0 959 702 N
       Component: Tuer-SG         006 1219  
       Coding: 0000438
       Shop #: WSC 01357 011 00200
       VCID: 3A2D31F1105DCD27C73-806E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 1T0-907-357.lbl
       Part No: 1T0 907 357 
       Component: Dynamische LWR      0003  
       Coding: 0000004
       Shop #: WSC 01357 011 00200
       VCID: 74B1DFC972B97B57DDF-8020
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio
    Cannot be reached
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
       Part No SW: 1K0 959 703 K    HW: 1K0 959 703 K
       Component: Tuer-SG         006 1302  
       Coding: 0000144
       Shop #: WSC 01357 011 1012552
       VCID: 38292BF92E51DF37317-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
       Part No SW: 1K0 959 704 K    HW: 1K0 959 704 K
       Component: Tuer-SG         006 1302  
       Coding: 0000144
       Shop #: WSC 01357 011 1012552
       VCID: 392F2EFD155BC63FCE9-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 76: Park Assist        Labels: 1K0-919-283.lbl
       Part No: 1K0 919 283 A
       Component: 22 Einparkhilfe     0101  
       Shop #: WSC 00000 000 00000
       VCID: 2D070AADD1136A9F521-8078
    
    No fault code found.
    
    End----------(Elapsed Time: 01:15, VBatt start/end: 11.9V/12.0V)-----------
    Last edited by cas; 11-08-2019 at 02:24 PM. Reason: Added autoscan

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  3. #2
    Verified VCDS User Danners74's Avatar
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    Is the exhaust leak free a the flexi joints? What fuel are you using?

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  5. #3
    NostraJackAss Jack@European_Parts's Avatar
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    Did you crimp off N80 and all intake hoses to isolate?
    Have you done a leak down test of injectors plus look at plug's burn patterns?
    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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  7. #4
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    Strange that your autoscan shows no codes in the engine computer despite the obvious out of range fuel trim you have going on.

    O2 sensor lean code the only fault it sets?

    Does it ever set a fuel pressure code? Most of these direct injected gas engines have a control module for the fuel pump to control in-tank pump output via PWM to better dial in pressure and volumes required for the precise operation that direct injection requires.

    Not at all unusual for the fuel pump control module to flake out and no longer adequately control the in-tank pump (even a new pump).

    A lot of the fuel filters on these cars also have a built in pressure regulator and return. But there are several different ones with different pressures. You have to make doubly sure you get the right filter rated at the correct pressure spec.

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  9. #5
    NostraJackAss Jack@European_Parts's Avatar
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    Do I have to say it because I'm going to?

    FOD and purported by whoever?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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  11. #6
    Verified VCDS User PetrolDave's Avatar
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    Quote Originally Posted by dieseldub View Post
    Strange that your autoscan shows no codes in the engine computer despite the obvious out of range fuel trim you have going on.
    Has the car been chip-tuned?

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  13. #7
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    Many thanks for the replies everyone

    Quote Originally Posted by Danners74 View Post
    Is the exhaust leak free a the flexi joints? What fuel are you using?
    As best as I can tell, the flexi pipes aren't leaking. Took a look when the exhaust was off to replace the prop shaft
    Using 98 or 95, depending on what is available. It doesn't appear to make any difference.

    Quote Originally Posted by Jack@European_Parts View Post
    Did you crimp off N80 and all intake hoses to isolate?
    Have you done a leak down test of injectors plus look at plug's burn patterns?
    Capped off the EVAP (also had a new solenoid) to check, and the exhaust flapper. All new lines for the intake manifold changeover plumbing. No signs of leaks anywhere else, plus the idle fuel trims seem OK.
    Not done a leakdown yet... need to find somewhere suitable around these parts. When I pulled the plugs there was nothing untowards there.

    Quote Originally Posted by dieseldub View Post
    Strange that your autoscan shows no codes in the engine computer despite the obvious out of range fuel trim you have going on.

    O2 sensor lean code the only fault it sets?

    Does it ever set a fuel pressure code? Most of these direct injected gas engines have a control module for the fuel pump to control in-tank pump output via PWM to better dial in pressure and volumes required for the precise operation that direct injection requires.

    Not at all unusual for the fuel pump control module to flake out and no longer adequately control the in-tank pump (even a new pump).

    A lot of the fuel filters on these cars also have a built in pressure regulator and return. But there are several different ones with different pressures. You have to make doubly sure you get the right filter rated at the correct pressure spec.
    When the fuel pump gave up, I was getting error codes. Since replacing the pumps, there haven't been any codes but I have been keeping an eye on the fuel trims.
    From what I saw, it only flags up if fuel trim maxs out (+25% in my case). It hasn't done that since I swapped the pumps (new, genuine ones).
    I replaced the fuel filter with a new, genuine filter, 4 bar if I recall correctly.
    I've never seen a fuel pressure code, but I will look into the fuel pump control module as I hadn't considered that before. Thank you

    Quote Originally Posted by Jack@European_Parts View Post
    Do I have to say it because I'm going to?

    FOD and purported by whoever?
    I hope it isn't FOD, at least in the context I understand it!

    Quote Originally Posted by PetrolDave View Post
    Has the car been chip-tuned?
    Not to my knowledge, but I guess we never really know what previous owners have done to vehicles

  14. #8
    Verified VCDS User NZDubNurd's Avatar
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    Bare in mind, everybody: this car is EU2 emissions regs. I can't recall the exact differences, but it's possibly only 2 lambdas and a simplified set of codes etc?

    Most people on here are going to be dealing with EU4 versions of this car/drive train, only a few markets got EU2.

    This motor isn't direct injected - though even VW relased official documented discussing it's direct injection It's caused quite some confusion at times!

    A VERY common issue for this, usually IS leaking flexies - they are a concertina design, and it's hard to spot the crack, which open or close depending on engine movement. I'd certainly concentrate some time there, possibly with somebody applying some back pressure to the exhaust outlets (There isn't a lot of restriction in the R32 system)
    Allan
    The R32ran Thread
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  15. #9
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    Quote Originally Posted by NZDubNurd View Post
    Bare in mind, everybody: this car is EU2 emissions regs. I can't recall the exact differences, but it's possibly only 2 lambdas and a simplified set of codes etc?

    Most people on here are going to be dealing with EU4 versions of this car/drive train, only a few markets got EU2.

    This motor isn't direct injected - though even VW relased official documented discussing it's direct injection It's caused quite some confusion at times!

    A VERY common issue for this, usually IS leaking flexies - they are a concertina design, and it's hard to spot the crack, which open or close depending on engine movement. I'd certainly concentrate some time there, possibly with somebody applying some back pressure to the exhaust outlets (There isn't a lot of restriction in the R32 system)
    That's very useful, thank you very much. Will try to get it up and take a second look.

  16. #10
    NostraJackAss Jack@European_Parts's Avatar
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    Stupid BUB
    Vehicle Identification No. WVWPM51K99W138436
    Model golf r32
    GOLF
    Date of production 24.10.2008
    Model year 2009
    Sales type 1K14X7
    Engine Code BUB
    Transmission Code KQA
    Emission standard 0GV Emission standard EU2
    (critical vapor pressure)
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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