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Thread: 2011 Audi A4 CAEB 2.0t Injection Volume

  1. #1
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    2011 Audi A4 CAEB 2.0t Injection Volume

    I'm taking a current baseline of key VCDS measurements for my 2011 Audi A4 with the CAEB 2.0t engine with an 8-speed automatic transmission. No modifications. 88k miles.

    I came across a potential anomaly when measuring IDE01932, High pressure pump injection volume mm3. Logging was performed at WOT in 3rd gear with numerous runs.

    Per the graph below, the injection volume as observed today is significantly lower than when I logged the same ID three years ago.

    A few questions:

    What is the expected range for Injection Volume values?
    Is this a command/expectation or observation/result value?
    Which sensor monitors Injection Volume?

    All other measurements I took (fuel pressure, boost, timing, AFR, Load, wastegate, etc.) look as expected and I'm trying to confirm whether my fueling works as expected or do I have a HPFP or injectors issue.

    Any insights or comparison logs would be greatly appreciated.


  2. #2
    Ross-Tech Employee DrPeter's Avatar
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    Hello,

    What is the expected range for Injection Volume values?
    - If there is no "specified value" listed in the Advanced Measuring Values, it would appear it is not possible to know.



    Is this a command/expectation or observation/result value?
    Which sensor monitors Injection Volume?
    - I would speculate the "High pressure pump injection volume (mm3)" is a calculated value, since there is no sensor for fuel volume, only pressure pressure.



    All other measurements I took (fuel pressure, boost, timing, AFR, Load, wastegate, etc.) look as expected and I'm trying to confirm whether my fueling works as expected or do I have a HPFP or injectors issue.


    Any insights or comparison logs would be greatly appreciated.
    Question:
    - Where the conditions the exactly the same three years ago as they were during the last baseline tests?

    I am thinking that normal powertrain wear, fuel formulas, ECM strategies and other conditions (atmospheric and others) could be the cause of the "potential anomaly".

    Is there anything wrong with the vehicle? It would be helpful to post up an Auto-Scan of the vehicle in question when asking such questions.


    This question would be best answered by the people who designed the system.

    Hope this helps,

    drpeter

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  4. #3
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    Thank you for the response, drpeter.

    Recent Autoscan:

    Code:
    Sunday,10,February,2019,12:52:54:17532
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 18.9.1.0 (x64)
    Data version: 20190114 DS296.0
    www.Ross-Tech.com
    
    
    VIN: WAUWFAFL0BA084802   License Plate: 
    Mileage: 143160km-88955mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: FL-AU48 (8T0)
    Scan: 01 02 03 05 08 09 15 16 17 19 2E 42 46 47 52 53 55 56 62 72
              77
    
    VIN: WAUWFAFL0BA084802   Mileage: 143160km-88955miles
    
    01-Engine -- Status: OK 0000
    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
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    2E-Media Player 3 -- Status: OK 0000
    42-Door Elect, Driver -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    47-Sound System -- 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: Malfunction 0010
    62-Door, Rear Left -- Status: OK 0000
    72-Door, Rear Right -- Status: OK 0000
    77-Telephone -- Status: OK 0000
     
    -------------------------------------------------------------------------------
    Address 01: Engine (0-----CAEB)       Labels:| 06H-907-115-CAB.clb
       Part No SW: 8K2 907 115 AG    HW: 8K2 907 115 D
       Component: 2.0l R4/4V TF H19 0002  
       Revision: E1H19---    
       Coding: 010C010A290F0160
       Shop #: WSC 51072 001 1048576
       ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
       ROD: EV_ECM20TFS0118K2907115AG.rod
       VCID: 74EC30F4DFFF53EAC9-8020
    
    No fault code found.
    Readiness: 1110 0101
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans (J217)       Labels:| 0BK-927-156.clb
       Part No SW: 8K0 927 158 K    HW: 0BK 927 156 N
       Component: 0BK 20TFSIUSA H08 0010  
       Revision: --H08---    
       Coding: 001112
       Shop #: WSC 06342 000 00000
       ASAM Dataset: EV_TCMAL551211 001013
       ROD: EV_TCMAL551211_001.rod
       VCID: 3E78D2DCA133C9BAEF-806A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
       Part No SW: 8K0 907 379 BJ    HW: 8K0 907 379 BJ
       Component: ESP8 quattro  H04 0060  
       Revision: --------    Serial number: --------------
       Coding: 1D0D18
       Shop #: WSC 06342 000 00000
       VCID: 0200662C9D4B6D5ACB-8056
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
       Part No SW: 8K0 907 064 CG    HW: 8K0 907 064 CG
       Component: BCM2 2.0      H05 0434  
       Revision: 00002001    
       Coding: 090200
       Shop #: WSC 06342 000 00000
       VCID: 77F607F8C68938F2EC-8022
    
       Subsystem 1 - Part No SW: 8T0 959 754 A    HW: 8T0 959 754 A
       Component: FBSAUDIB8 IDG  H50 0071 
       Serial number: 0810000115895004    
    
       Subsystem 2 - Part No SW: 8K0 905 852 D    HW: 8K0 905 852 D
       Component: J764 ELV MLB  H37 0042 
       Serial number: 2310000054180016    
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J255)       Labels:. 8Tx-820-043-3Z.clb
       Part No SW: 8T1 820 043 AQ    HW: 8T1 820 043 AQ
       Component: KLIMA 3 ZONEN H08 0180  
       Revision: C1000000    Serial number: 01161120102291
       Coding: 64002000
       Shop #: WSC 06342 000 00000
       VCID: 00046C2493477F4ADD-8054
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
       Part No SW: 8K0 907 063 P    HW: 8K0 907 063 P
       Component: BCM1 1.0      H30 0392  
       Revision: 10030001    Serial number: 00000000856880
       Coding: 26001091063CAF010000080300003D0D0F1C460802010161000000
       Shop #: WSC 06342 123 12345
       VCID: 3C7CD8D4BF2FDBAAC1-8068
    
       Subsystem 1 - Part No SW: 8K1 955 119 A    HW: 8T1 955 119   Labels: 1KX-955-119.CLB
       Component: WWS 181110  H06 0070 
       Serial number: SWF10110180017      
       Coding: 00F511
    
       Subsystem 2 - Part No SW: 8K0 955 559     HW: 8K0 955 559   Labels: 8K0-955-559.CLB
       Component: RLS  H04 0003 
       Serial number: 11154499            
       Coding: 025028
    
       Subsystem 3 - Part No SW: 8K0 941 531 AL    HW: 8K0 941 531 AL
       Component: E1 - LDS  H08 0090 
       Serial number: 00000000000911100513
    
       Subsystem 4 - Part No SW: 8K0 907 410 C    HW: 8K0 907 410 C
       Component: HOMELINK  H01 0010 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels:* 8K0-959-655.clb
       Part No SW: 8K0 959 655 K    HW: 8K0 959 655 K
       Component: AirbagVW-AU10 H41 0610  
       Serial number: 003GLD0GV1Z7  
       Coding: 303837354230303030304A55304C384B3053
       Shop #: WSC 06335 000 00000
       ASAM Dataset: EV_AirbaECUVWAUDI010 003010
       ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
       VCID: 458ABD30C4E59A62AE-8010
    
       Seat occupied recognition: 
       Subsystem 1 - Part No SW: 8K0 959 339 C    HW: 8K0 959 339 C
       Component: BF-Gewichtss.  H02 0040 
       Serial number: 5810000R1000001YUA
    
       Crash sensor for side airbag: driver side: 
       Serial number: 6334MSME57542635A
    
       Crash sensor for side airbag: front passenger side: 
       Serial number: 6344MSME590037356
    
       Crash sensor for side airbag: rear: driver side: 
       Serial number: 6352QSME786A4B1E 
    
       Crash sensor for side airbag: rear: passenger side: 
       Serial number: 6362QSME086B3232D
    
       Crash sensor for front airbag: driver side: 
       Serial number: 63732SME1B780E00/
    
       Crash sensor for front airbag: front passenger side: 
       Serial number: 63832SME6C7731362
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
       Part No SW: 8R0 953 568 K    HW: 8R0 953 568 K
       Component: Lenks.Modul   H07 0156  
       Revision: 00000000    Serial number: 20101124000028
       Coding: 000037
       Shop #: WSC 06342 123 12345
       VCID: 4992B100E0FD7E024A-801C
    
       Component: E221 - MFL  H02 0010 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
       Part No SW: 8K0 920 950 H    HW: 8K0 920 950 H
       Component: KOMBIINSTR.   H20 0258  
       Revision: 00200000    Serial number: EIL74AHCA     
       Coding: 831F11000300D705020000
       Shop #: WSC 06342 123 12345
       VCID: 346CF0F4977F13EA09-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
       Part No SW: 8T0 907 468 AB    HW: 8T0 907 468 H
       Component: GW-BEM 5CAN   H06 0117  
       Revision: GB800053    Serial number: 5300G10B0281FB
       Coding: 00C303
       Shop #: WSC 06342 000 00000
       VCID: 01026920984D7642D2-8054
    
       Subsystem 1 - Part No SW: 8K0 915 181 E    HW: 8K0 915 181 E
       Component: J367-BDM  H07 0170 
       Serial number: 10006E66151110      
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 2E: Media Player 3 (R199)       Labels:. 8T0-035-785.clb
       Part No SW: 8T0 035 785 A    HW: 8T0 035 785 
       Component: SG ext.Player H08 0290  
       Revision: 00000000    
       Coding: 020302
       Shop #: WSC 06342 000 00000
       VCID: 3972C1C0B01DEE82DA-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
       Part No SW: 8K0 959 793 M    HW: 8K0 959 793 M
       Component: TSG FA        H12 0357  
       Revision:             Serial number: 0000011704541 
       Coding: 011C03204000410001
       Shop #: WSC 06342 000 00000
       VCID: 4A908E0CE5FB751A43-801E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
       Part No SW: 8K0 907 064 CG    HW: 8K0 907 064 CG
       Component: BCM2 2.0      H05 0434  
       Revision: 00002001    Serial number: 0137830379    
       Coding: 0126063A20BA441480B0023200000000
       Shop #: WSC 06342 123 12345
       VCID: 77F607F8C68938F2EC-8022
    
       Subsystem 1 - Part No SW: 8K0 959 719     HW: 8K0 959 719 
       Component: GTO BF  H06 0050 
       Serial number: 00000000000000328830
    
       Subsystem 2 - Part No: 1K0 951 605 C
       Component: LIN BACKUP HO  H05 1501 
    
       Subsystem 3 - Part No SW: 8K0 959 591 B    HW: 8K0 959 591 
       Component: J245 PS150  H08 0043 
    
       Subsystem 4 - Part No SW: 8K0 959 591 A    HW: 8K0 959 591 
       Component: J394 PS229  H07 0041 
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 47: Sound System (J525)       Labels:. 8T0-035-223-BOC.clb
       Part No SW: 8T0 035 223 AR    HW: 8T0 035 223 AJ
       Component: DSP Prem      H19 0320  
       Revision: 00019001    Serial number: 34803000451301
       Coding: 0203010302
       Shop #: WSC 20205 444 13906
       VCID: 7EF812DCE9B309BAAF-802A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
       Part No SW: 8K0 959 792 M    HW: 8K0 959 792 M
       Component: TSG BF        H12 0357  
       Revision:             Serial number: 0000110556150 
       Coding: 011C03204000410001
       Shop #: WSC 06342 000 00000
       VCID: 4992B100E0FD7E024A-801C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
       Part No SW: 8K0 907 801 H    HW: 8K0 907 801 H
       Component: EPB Audi B8   H09 0100  
       Revision: 00000003    Serial number: 00000000798706
       Shop #: WSC 00000 000 00000
       VCID: 346CF0F4977F13EA09-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 55: Headlight Range        Labels: 8K0-907-357.clb
       Part No: 8K5 907 357 B
       Component: Dynamische LWR  H02 0010  
       Revision: 00000001    Serial number:               
       Coding: 0000004
       Shop #: WSC 06335 000 00000
       VCID: 3972C1C0701DEE82DA-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J503)       Labels:. 8Tx-035-1xx-56.clb
       Part No SW: 8T1 035 186 R    HW: 8T1 035 186 R
       Component: Con3 Sirius   H06 0351  
       Revision: 00000009    Serial number: AUZ5Z6J1498045
       Coding: 04030002010285004359070800
       Shop #: WSC 06335 000 00000
       VCID: 4688BA3CF1E3917AA7-8012
    
       Subsystem 1 - Part No SW: 8T0 919 603 F    HW: 8T0 919 603 F
       Component: Display  
    
    1 Fault Found:
    02635 - Tuner Not Enabled/Activated 
                000 -  - 
                 Freeze Frame:
                        Fault Status: 01100000
                        Fault Priority: 7
                        Fault Frequency: 1
                        Reset counter: 229
                        Mileage: 142877 km
                        Time Indication: 0
                        Date: 2019.01.30
                        Time: 20:59:06
    
    
    -------------------------------------------------------------------------------
    Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
       Part No SW: 8K0 959 795 F    HW: 8K0 959 795 F
       Component: TSG HL        H11 0357  
       Revision:             Serial number: 0000110509120 
       Coding: 010C03204000210001
       Shop #: WSC 06342 000 00000
       VCID: 458ABD30CCE59A62AE-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-795.clb
       Part No SW: 8K0 959 795 F    HW: 8K0 959 795 F
       Component: TSG HR        H11 0357  
       Revision:             Serial number: 0000110509185 
       Coding: 010C03204000210001
       Shop #: WSC 06342 000 00000
       VCID: 458ABD30CCE59A62AE-8010
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 77: Telephone        Labels: 8P0-862-335.lbl
       Part No SW: 8T0 862 336 E    HW: 8T0 862 336 E
       Component: FSE_256x BT     H42 0650  
       Revision: 00000000    Serial number: 00000005100014
       Coding: 0010370
       Shop #: WSC 06342 000 00000
       VCID: 3D7AD5D06435D2A2F6-8068
    
    No fault code found.
    
    End-------------------------(Elapsed Time: 03:28)--------------------------
    Regarding test conditions, I kept all variables as consistent as possible: same stretch of highway, same gear, etc.

    Over the years, major work was performed to the car, including oil consumption stage 1 and 2 fix (PCV, pistons and rings), timing chain and tensioner replacement.

    Car still has original HPFP and injectors.

    I'm at 5000ft altitude which affects charge pressure and air flow readings.

    I inspected the intake valves via borescope and see a good amount of carbon build-up.

    The car doesn't throw any codes, but I dug a little deeper into the fuel trim values. LTFT hovers around 13%. Screenshot at idle with warmed up engine:



    Already did an intake pressure test to check for air leaks which passed. I still need to inspect for any exhaust leaks.

    Car is at 90k miles and a carbon cleanup of the intake is on the horizon and I'm contemplating replacing the fuel injectors at the same time.

    Bottom line, I'm trying to gauge whether the car operates within expected ranges and learn more about ECU management in the process.

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