VAGCom Errors on '09 S6 - Free advice appreciated

A6 All/ S6 All
#1

I was driving my car fast in “S” the other night to dry it off after a wash when the engine light began to flash on the dash. I slowed down and put it into “D” then the engine light stopped flashing and I have not seen the engine light flash since then. I scanned it today and got the following errors. Any experts here who can help me understand what is going on?

Another issue I have is bad gas mileage, even on the highway. After new plugs and filters it still averages only 15-16 mpg. This may be common with a V10 but I thought that it would be better on long HW trips. Do any of these error codes point to anything?

Address 01: Engine (BXA) Labels: Redir Fail!
Part No SW: 4F1 910 562 A HW: 4F1 907 552 B
Component: 5.2L V10/4V FSI ª0010
Revision: 5HH03— Serial number:
Coding: 01050009190F0160
Shop #: WSC 02256 785 00200
VCID: 23450795E219603953D-8076

1 Fault Found:
006435 - Please Check DTC Memory of ECU Number 2
P1923 - 008 -
Freeze Frame:
Fault Status: 01101000
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 100252 km
Time Indication: 0
Date: 2015.05.16
Time: 07:49:08

         Freeze Frame:
                RPM: 0 /min
                Load: 0.0 %
                Speed: 0.0 km/h
                Temperature: 42.0°C
                Temperature: 42.0°C
                Absolute Pres.: 990.0 mbar
                Voltage: 11.303 V

Readiness: 0000 0000

Address 05: Acc/Start Auth. Labels: 4F0-910-852.clb
Part No SW: 4F0 910 852 B HW: 4F0 905 852 E
Component: FBSAUDIC6 ELV H05 0100
Revision: 00H05000 Serial number: 10602501248037
Coding: 0000007
Shop #: WSC 02323 785 00200
VCID: 2541198DEC2D9E093D9-8070

Subsystem 1 - Part No: 4F0 910 132 L
Component: FBSAUDIC6 EZS H03 0020

Subsystem 2 - Part No: 4F0 910 335 B
Component: FBSAUDIC6 KSG H03 0020

1 Fault Found:
00956 - Key 2
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00110010
Fault Priority: 3
Fault Frequency: 2
Reset counter: 153
Mileage: 99655 km
Time Indication: 0
Date: 2015.05.07
Time: 17:50:25

Address 11: Engine II Labels: Redir Fail!
Part No SW: 4F1 910 562 A HW: 4F1 907 552 B
Component: 5.2L V10/4V FSI ª0010
Revision: 5HH03— Serial number:
Coding: 01050009190F0160
Shop #: WSC 02256 785 00200
VCID: 23450795E219603953D-8076

2 Faults Found:
000768 - Random/Multiple Cylinder Misfire Detected
P0300 - 001 - - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 100136 km
Time Indication: 0
Date: 2015.05.14
Time: 20:56:32

         Freeze Frame:
                RPM: 5294 /min
                Load: 92.5 %
                Speed: 111.0 km/h
                Temperature: 82.0°C
                Temperature: 30.0°C
                Absolute Pres.: 990.0 mbar
                Voltage: 12.954 V

000770 - Cylinder 2
P0302 - 001 - Misfire Detected - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 2
Fault Frequency: 1
Reset counter: 255
Mileage: 100136 km
Time Indication: 0
Date: 2015.05.14
Time: 20:56:32

         Freeze Frame:
                RPM: 5294 /min
                Load: 92.5 %
                Speed: 111.0 km/h
                Temperature: 82.0°C
                Temperature: 30.0°C
                Absolute Pres.: 990.0 mbar
                Voltage: 12.954 V

Address 3C: Lane Change Labels: None
Part No SW: 4L0 910 566 D HW: 4L0 907 566 B
Component: J0769_SWA_MasterH01 0010
Revision: 00H01000 Serial number: 6PZ 009 014-15
Coding: 0000002
Shop #: WSC 02325 785 00200
VCID: 2F6DFBA5BED1D459C75-807A

Subsystem 1 - Part No: 4L0 910 568 D
Component: J0770_SWA_Slave_H01 0010

Subsystem 2 - Serial number: 6PZ 009 014-35

Subsystem 3 - Serial number: 5F10.01.0900H010003CN10285ÿ

Subsystem 4 - Serial number: N10285ÿ

1 Fault Found:
02850 - Control Module 2 for Lane Change Assistance (J770)
014 - Defective
Freeze Frame:
Fault Status: 01101110
Fault Priority: 3
Fault Frequency: 1
Reset counter: 8
Mileage: 96140 km
Time Indication: 0
Date: 2015.04.02
Time: 20:42:48

End-------------------------(Elapsed Time: 03:35)--------------------------

#2

Well your in the right place for help.
The flashing was from your motor getting massive amounts of misfires.

The fault came at WOT it was just isolated to cylinder number 2. So that’s a good thing. Usually the first things to check are the cool packs and plugs.

#3

You are over 62K miles right?

Have you changed your fuel filter? They look like they are similar to the B7 cars.

Check your intake manifold since it seems like a lot of them have been failing recently.

#4

could be a shot in the dark. when I first bought my S6 I filled it up at shady gas station in the middle of nowhere… had misfires and check engine lights for a few tanks after that then it was ok once I cleared the codes.

I’ve not had a misfire since. So I chalked it up as bad gas.

I also changed the fuel filter when I got home, so that could be the other issue.

#5

Thanks Guys. I have heard that remote gas stations can have bad fuel since they don’t sell a lot of premium fuel. I did go to a sketchy one off of the HWY last weekend… maybe that was it! The fuel filter will be replaced soon too.

On a VAG-COM note, I tried to clear the codes after scanning it yesterday but they wouldn’t go away. Am I doing something wrong or does that mean something?

Finally, this car has had bad road noise from the front since it came to me a few months ago. It came with Pilot Sport A/S 3’s which have good tread but were made in 2012, so over 2.5 yrs ago. I tried swapping back to front and that just made matters worse. New tires might be the answer. Any other suggestions? Should I expect a certain amount of road noise due to stiffer suspension in the S6 than my previous A6’s?

I’ll search for tire threads in a moment.

#6

Road noise is tied to your tire selection in several cases. Try adding more air and then removing air to see if that moves or changes the noise.

As for the codes. The code might have been stored in a different ecu location then you were in. Go into ecu 1 and then go into ecu 2 to see if there are any other standing codes. Clear them both