S6 V10 - Random/Multiple misfires - intermittent.

   #1  

Rollux

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VCDS Serial number
C?ID=380572
Hi All
Seeking some suggestions on where to go from here;

Have a well maintained (by us) Audi S6 V10 that has intermittent multiple cylinder/random cylinder misfires. Seems to have no pattern as to when - can be hot, cold, at idle, driving, cruising etc. Has over time affected all cylinders, and none seem to be more common than others.

Can happen several times in a day, or not at all for 3 months - car is driven several times a week.
We have done the following in the last 10,000kms (some of this for this fault, some of it for maintenance or at owners request) and nothing has made any difference whatsoever.

Replaced all spark plugs (Genuine)
Replaced all ignition coils (Genuine)
Replaced RH HP fuel pump (was leaking)
Removed and cleaned throttle body, intake manifold and back of valves.
Had ECUs reflashed for more power. (Customer request)

Autoscan from today when he popped back in and said it had happened a couple of times.

Code:
Thursday,13,August,2020,15:50:41:56060
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.4.2.0 (x64)  HEX-V2 CB: 0.4513.4
Data version: 20200730 DS317.0
www.Ross-Tech.com

Dealer/Shop Name: Topp Motors

VIN: WAUZZZ4F77N165022   License Plate: FAF246
Mileage: 117370km-72930mi   Repair Order: 



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 4F (4L0)
Scan: 01 02 03 05 07 08 09 0E 11 31 15 16 17 19 1E 36 42 46 47 4F
          52 53 55 56 57 61 62 6C 72 76 77

VIN: WAUZZZ4F77N165022   Mileage: 117370km-72930miles

00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
0E-Media Player 1 -- Status: OK 0000
11-Engine II -- Status: Malfunction 0010
31-Engine other -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
1E-Media Player 2 -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: Malfunction 0010
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
57-TV Tuner -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: Malfunction 0010
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine        Labels: None
   Part No SW: 4F7 910 552     HW: 4F1 907 552 
   Component: 5.2L V10/4V FSI    ª0010  
   Revision: 59H14---    Serial number:               
   Coding: 01050003190F0160
   Shop #: WSC 08646 001 1048576
   VCID: 678BBB4243607BF3F39-8032

1 Fault Found:
006435 - Please Check DTC Memory of ECU Number 2 
               P1923 - 008 - 
             Freeze Frame:
                    Fault Status: 01101000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 117377 km
                    Time Indication: 0

             Freeze Frame:
                    RPM: 0 /min
                    Load: 0.0 %
                    Speed: 0.0 km/h
                    Temperature: 92.0°C
                    Temperature: 20.0°C
                    Absolute Pres.: 1010.0 mbar
                    Voltage: 12.192 V

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09E-927-156.lbl
   Part No SW: 4F2 910 156 M    HW: 09E 927 156 C
   Component: AG6 09E 5,2 FSI RdW 0030  
   Revision: --H01---    Serial number:        0105976
   Coding: 0000001
   Shop #: WSC 02325 758 00200
   VCID: 2F3B1362AB10E3B3FB9-807A

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 4F0-910-517.clb
   Part No SW: 4F0 910 517 P    HW: 4F0 614 517 P
   Component: ESP 8.0 quattro H05 0070  
   Revision: 00000000    Serial number: 00000000000000
   Coding: 0020920
   Shop #: WSC 02325 758 00200
   VCID: 313F151ABD24F543EDD-8064

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth.        Labels:. 4F0-910-852.clb
   Part No SW: 4F0 910 852 A    HW: 4F0 905 852 C
   Component: FBSAUDIC6 ELVSG H01 0030  
   Revision: 31050601    Serial number: 10601200744963
   Coding: 0000019
   Shop #: WSC 02323 758 00200
   VCID: 2411EC4EF2D650EB16B-8070

   Subsystem 1 - Part No: 4F0 910 131 A
   Component: FBSAUDIC6 EZS   H45 0080

   Subsystem 2 - Part No: 4F0 910 220 
   Component: FBSAUDIC6 IDG   H01 0040

No fault code found.

-------------------------------------------------------------------------------
Address 07: Control Head        Labels: 4F0-910-7xx-07-H.clb
   Part No SW: 4F0 910 731 S    HW: 4E0 035 729 A
   Component: Interfacebox    H43 3450  
   Revision: 00000000    Serial number: 351DN077545550
   Coding: 0010002
   Shop #: WSC 02335 758 00200
   VCID: 323D1A16B822CE5B947-8066

   Subsystem 1 - Part No: 4F0 910 609 E
   Component: Bedienteil MMIC6H01 0060

   Subsystem 2 - Serial number: 00000000789107

   Subsystem 3 - Serial number: 0121.06.070000000100010451ÿ

   Subsystem 4 - Serial number: 010451ÿ

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 4F0-910-043.clb
   Part No SW: 4F0 910 043 A    HW: 4F2 820 043 Q
   Component: KLIMABETAETIGUNGH30 0020  
   Revision: 00000052    Serial number: 00000030238253
   Coding: 0525386
   Shop #: WSC 02325 758 00200
   VCID: 1C61D4AECAA6682BAEB-8048

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels: 4F0-910-279.lbl
   Part No SW: 4F0 910 279 J    HW: 4F0 907 279 A
   Component: ILM Fahrer      H17 0240  
   Revision: 00000000    Serial number: 4F0907279     
   Coding: 0115101
   Shop #: WSC 02335 758 00200
   VCID: 3039101EB62EFC4BE23-8064

   Subsystem 1 - Part No: 4F2 910 113 B  Labels: 1KX-955-119.CLB
   Component: Wischer AudiC6  H04 0190  
   Coding: 00064784
   Shop #: WSC 02335  

   Subsystem 2 - Part No: 4E0 910 557 A  Labels: 8K0-955-559.CLB
   Component: REGENLICHTSENSORH13 0090  
   Coding: 00146221
   Shop #: WSC 02335  

No fault code found.

-------------------------------------------------------------------------------
Address 0E: Media Player 1 (R192)       Labels:. 4E0-035-785.lbl
   Part No SW: 4E0 035 785     HW: 4E0 035 785 
   Component: SG ext.Player H09 0170  
   Revision: 00000000    
   VCID: 6597B14AB56C69E3C15-8030

No fault code found.

-------------------------------------------------------------------------------
Address 11: Engine II        Labels: None
   Part No SW: 4F7 910 552     HW: 4F1 907 552 
   Component: 5.2L V10/4V FSI    ª0010  
   Revision: 59H14---    Serial number:               
   Coding: 01050003190F0160
   Shop #: WSC 08646 001 1048576
   VCID: 678BBB4243607BF3F39-8032

5 Faults Found:
000768 - Random/Multiple Cylinder Misfire Detected 
               P0300 - 008 -  - Intermittent - MIL ON
             Freeze Frame:
                    Fault Status: 10101000
                    Fault Priority: 0
                    Fault Frequency: 2
                    Reset counter: 255
                    Mileage: 117306 km
                    Time Indication: 0
                    Date: 2020.08.10
                    Time: 11:25:05

             Freeze Frame:
                    RPM: 1140 /min
                    Load: 28.2 %
                    Speed: 0.0 km/h
                    Temperature: 31.0°C
                    Temperature: 21.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

000771 - Cylinder 3 
               P0303 - 008 - Misfire Detected - Intermittent - MIL ON
             Freeze Frame:
                    Fault Status: 10101000
                    Fault Priority: 0
                    Fault Frequency: 2
                    Reset counter: 255
                    Mileage: 117306 km
                    Time Indication: 0
                    Date: 2020.08.10
                    Time: 11:25:05

             Freeze Frame:
                    RPM: 1140 /min
                    Load: 28.2 %
                    Speed: 0.0 km/h
                    Temperature: 31.0°C
                    Temperature: 21.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

000772 - Cylinder 4 
               P0304 - 008 - Misfire Detected - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 117306 km
                    Time Indication: 0
                    Date: 2020.08.10
                    Time: 11:25:05

             Freeze Frame:
                    RPM: 1140 /min
                    Load: 28.2 %
                    Speed: 0.0 km/h
                    Temperature: 31.0°C
                    Temperature: 21.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

000777 - Cylinder 9 
               P0309 - 008 - Misfire Detected - Intermittent - MIL ON
             Freeze Frame:
                    Fault Status: 10101000
                    Fault Priority: 0
                    Fault Frequency: 2
                    Reset counter: 255
                    Mileage: 117306 km
                    Time Indication: 0
                    Date: 2020.08.10
                    Time: 11:25:05

             Freeze Frame:
                    RPM: 1140 /min
                    Load: 28.2 %
                    Speed: 0.0 km/h
                    Temperature: 31.0°C
                    Temperature: 21.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 13.970 V

000775 - Cylinder 7 
               P0307 - 008 - Misfire Detected - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 117345 km
                    Time Indication: 0
                    Date: 2020.08.12
                    Time: 06:34:58

             Freeze Frame:
                    RPM: 1154 /min
                    Load: 28.6 %
                    Speed: 0.0 km/h
                    Temperature: 31.0°C
                    Temperature: 20.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 14.097 V


-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 4F0-910-655-8R.clb
   Part No SW: 4F0 910 655 E    HW: 4F0 959 655 B
   Component: 4F AIRBAG AUDI8RH30 0280  
   Revision: 09H30000    Serial number: 0037LD0RKLL4  
   Coding: 0013382
   Shop #: WSC 02325 758 00200
   VCID: 290FFD7A95F48D8325D-807C

   Subsystem 1 - Serial number: 6332CSME19690D166

   Subsystem 2 - Serial number: 6342CSME17680513-

   Subsystem 3 - Serial number: 6352QSME292C3A6DY

   Subsystem 4 - Serial number: 6362QSME2C4D1E43V

   Subsystem 5 - Serial number: 63734SME294D1C4BE

   Subsystem 6 - Serial number: 63834SME23741A3B0

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 4F0-910-549.lbl
   Part No SW: 4F0 910 549     HW: 4F0 953 549 A
   Component: Lenksäulenmodul H08 0230  
   Revision: 00H08000    Serial number: 90055071160314
   Coding: 0112141
   Shop #: WSC 02323 758 00200
   VCID: 6695B646446A62FBC8F-8032

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: Lenkradmodul    H07 0090

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 4F0-910-xxx-17.lbl
   Part No SW: 4F0 910 930 C    HW: 4F0 920 931 G
   Component: KOMBIINSTR. M73 H20 0170  
   Revision: 00400000    Serial number: 5H156LH47     
   Coding: 2113848
   Shop #: WSC 00000 000 402950
   VCID: 2313EF52F7D857D36F1-8076

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 4L0-910-468.clb
   Part No SW: 4L0 910 468     HW: 4L0 907 468 
   Component: J533__Gateway   H06 0040  
   Revision: 00H06000    Serial number: 0900B0741080C8
   Coding: F5D1DEF7701606
   Shop #: WSC 02334 758 00200
   VCID: 6C81C46E5A8658AB9EB-8038

No fault code found.

-------------------------------------------------------------------------------
Address 1E: Media Player 2        Labels: 4E0-910-111.lbl
   Part No SW: 4E0 910 110 C    HW: 4E0 035 110 A
   Component: MP3-Changer     H44 0350  
   Revision: 00044000    Serial number: AUZ5ZBG3225267
   Shop #: WSC 00000 000 00000
   VCID: 1869C8BE3E9E040B8A3-804C

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr        Labels: None
   Part No SW: 4F0 910 760     HW: 4F0 959 760 
   Component: Sitzmemory FS   H04 0050  
   Revision: 00000000    Serial number: 00000000896400
   Coding: 0091138
   Shop #: WSC 02334 758 00200
   VCID: 619FA55AAD4405C33DD-8034

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels: 4F0-910-793-42.lbl
   Part No SW: 4F0 910 793 E    HW: 4F0 959 793 E
   Component: TSG FA          H12 0210  
   Revision: 00000000    Serial number: †“i
   Coding: 0002810
   Shop #: WSC 02327 758 00200
   VCID: 2C01046E9A0698ABDEB-8078

2 Faults Found:
01705 - Selection Switch for Mirror-Adjust (E48) 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 3
                    Fault Frequency: 2
                    Reset counter: 221
                    Mileage: 116421 km
                    Time Indication: 0
                    Date: 2020.05.25
                    Time: 09:03:12

02123 - Door Warning Light / Entry Light 
            012 - Electrical Fault in Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101100
                    Fault Priority: 3
                    Fault Frequency: 14
                    Reset counter: 221
                    Mileage: 116421 km
                    Time Indication: 0
                    Date: 2020.05.25
                    Time: 09:11:49


-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 4F0-910-289.lbl
   Part No SW: 4F0 910 289 G    HW: 4F0 907 289 G
   Component: Komfortgeraet   H22 0170  
   Revision: 01700022    Serial number: 01042619050000
   Coding: 0139761
   Shop #: WSC 02335 758 00200
   VCID: 2E050E66AC1AEABBF0F-807A

   Subsystem 1 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HORN H03 1301

   Subsystem 2 - Part No: 4F0 910 177 
   Component: Innenraumueberw.H01 0020

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System        Labels: 4F0-910-223-BO.lbl
   Part No SW: 4F0 910 223 J    HW: 4F0 035 223 G
   Component: DSP-High C6     H10 0240  
   Revision: PROD_01     Serial number: 00000000026785
   Coding: 0000017
   Shop #: WSC 02323 758 00200
   VCID: 2517F14AF9ECA9E3015-8070

No fault code found.

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II        Labels: 4F0-910-280.lbl
   Part No SW: 4F0 910 280     HW: 4F0 907 280 A
   Component: ILM Beifahrer   H10 0080  
   Revision:             Serial number: 00000000334962
   Coding: 0011104
   Shop #: WSC 02323 758 00200
   VCID: 5EE59EA69C3A3A3B00F-800A

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels: 4F0-910-793-52.lbl
   Part No SW: 4F0 910 793 E    HW: 4F0 959 792 E
   Component: TSG BF          H12 0210  
   Revision: 00000000    Serial number: 9bp
   Coding: 0002810
   Shop #: WSC 02327 758 00200
   VCID: 2C01046E9A0698ABDEB-8078

1 Fault Found:
02123 - Door Warning Light / Entry Light 
            012 - Electrical Fault in Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101100
                    Fault Priority: 3
                    Fault Frequency: 2
                    Reset counter: 221
                    Time Indication: 0


-------------------------------------------------------------------------------
Address 53: Parking Brake        Labels: 4F0-910-801.clb
   Part No SW: 4F0 910 801 C    HW: 4F0 907 801 A
   Component: EPB  CDEC0080   H04 0080  
   Revision: --H04---    
   Coding: 0008021
   Shop #: WSC 02335 758 00200
   VCID: 2019E05EE6CE4CCB723-8074

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 4F0-910-357.lbl
   Part No SW: 4F0 910 357 F    HW: 4F0 907 357 F
   Component: AFS 1           H01 0020  
   Revision: 00000001    Serial number:               
   Coding: 0000016
   Shop #: WSC 02325 758 00200
   VCID: 290FFD7A95F48D8325D-807C

   Subsystem 1 - Part No: 4F0 941 329 B
   Component: AFS-Modul links H02 0020

   Subsystem 2 - Part No: 4F0 941 329 B
   Component: AFS-Modul rechtsH02 0020

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 4E0-910-541.lbl
   Part No SW: 4E0 910 541 Q    HW: 4F0 035 541 L
   Component: TUNER EU/US/RDW H42 0620  
   Revision: 00000000    Serial number: 394DX077764109
   Coding: 0000001
   Shop #: WSC 02323 758 00200
   VCID: 2E050E66AC1AEABBF0F-807A

No fault code found.

-------------------------------------------------------------------------------
Address 57: TV Tuner        Labels: 4E0-910-146.clb
   Part No SW: 4E0 910 146 F    HW: 4E0 919 146 C
   Component: TV analog TUNER H15 0290  
   Revision: 00000089    Serial number: 00000000010098
   Coding: 0000010
   Shop #: WSC 02335 758 00200
   VCID: 2411EC4EF2D650EB16B-8070

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul.
Cannot be reached

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels: 4F0-910-795.lbl
   Part No SW: 4F0 910 795 E    HW: 4F0 959 795 E
   Component: TSG HL          H21 0050  
   Coding: 0002090
   Shop #: WSC 02327 758 00200
   VCID: 2E050E66AC1AEABBF0F-807A

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 4L0-910-441.clb
   Part No SW: 4F0 910 441     HW: 4L0 907 441 A
   Component: J772__Rearview      0050  
   Revision: --H12---    Serial number: 525PA8-J732002
   Coding: 1020204
   Shop #: WSC 02335 758 00200
   VCID: 5DE799AA913C2123195-8008

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels: 4F0-910-795.lbl
   Part No SW: 4F0 910 795 E    HW: 4F0 959 794 E
   Component: TSG HR          H21 0050  
   Coding: 0002090
   Shop #: WSC 02327 758 00200
   VCID: 2E050E66AC1AEABBF0F-807A

No fault code found.

-------------------------------------------------------------------------------
Address 76: Park Assist        Labels: 4Fx-910-283.lbl
   Part No SW: 4F0 910 283 G    HW: 4F0 919 283 G
   Component: Parkhilfe 8-Kan H12 0060  
   Revision: 00H12000    Serial number: 06330712404877
   Coding: 0221106
   Shop #: WSC 131071 1023 2097151
   VCID: 2809F87E8EFEB48B3A3-807C

1 Fault Found:
02069 - Front Parking Aid Sensors 
            011 - Open Circuit - Intermittent
             Freeze Frame:
                    Fault Status: 00101011
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 221
                    Mileage: 116421 km
                    Time Indication: 0
                    Date: 2020.05.25
                    Time: 10:50:37


-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 4F1-910-336.lbl
   Part No SW: 4F1 910 336 A    HW: 4F1 862 335 
   Component: BTA             H09 0710  
   Revision: 00H09000    Serial number: 00000007534127
   Coding: 1040091
   Shop #: WSC 02335 758 00200
   VCID: 221DEA56E8C25EDB647-8076

No fault code found.

End----------(Elapsed Time: 02:17, VBatt start/end: 12.4V/14.4V)-----------

Any suggestions as to where to next would be appreciated.
Regards
Dan
 
   #2  

TFSI

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VCDS Serial number
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Dan
If this is my car trying to find the problem,I will take the car in and drive for few days or weeks under different conditions to verify under what conditions such misfires occur. I will also hook the VCDS while driving under these different conditions in MVB 15 and 16 to see which cylinders are affected. Any observations will give you an idea what the probable causes are and the solution. For a 14 year old car with over 100k miles I wont be surprised carbon deposits are involved or loose/leaking vacuum hose connection.
 
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   #3  

Rollux

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Location
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VCDS Serial number
C?ID=380572
Thanks for the reply
We have removed manifold and cleaned carbon recently (was very minor compared to most), smoke tested for vacuum leaks and also had the car for several weeks trying to ID as you have suggested (during which time it was flawless - for another few months)
Customer also kept a logbook for us for when it happened over a 5 month period - no identifiable pattern ( we would scan it and add to his diary RPM, Coolant temp and cylinder #)

Fortunately our customer loves the car - foibles and all - and is an aircraft maintenance planner, so knows how it goes, but it would be nice to nail the cause.
 
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