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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.
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Ross-Tech Employee
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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Uwe liked this post
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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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