Ok I bought the $15 vag com cable from ebay, worked fine, adjusted the xenon lights no prob, then ran a test to see all the reasons check engine was lit. Here is a summary, my question is below it.

Chassis Type: 4B - Audi A6 C5
Scan: 01,02,03,08,15,16,17,35,36,37,45,55,56

Address 01 -------------------------------------------------------
Controller: 4D0 907 558 S
Component: 4.2L V8/5V G 0008
Coding: 06652
Shop #: WSC 00000
16 Faults Found:
16825 - EVAP Emission Control Sys: Incorrect Flow
P0441 - 35-10 - - - Intermittent
17549 - Load Calculation Cross Check: Implausible Value
P1141 - 35-10 - - - Intermittent
17972 - Throttle Actuator (J338): Under-Voltage during Basic Setting
P1564 - 35-10 - - - Intermittent
17544 - Fuel Trim: Bank 1 (Add): System too Lean
P1136 - 35-00 - -
17546 - Fuel Trim: Bank 2 (Add): System too Lean
P1138 - 35-00 - -
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-10 - - - Intermittent
16685 - Cylinder 1 Misfire Detected
P0301 - 35-10 - - - Intermittent
16692 - Cylinder 8 Misfire Detected
P0308 - 35-10 - - - Intermittent
16690 - Cylinder 6 Misfire Detected
P0306 - 35-10 - - - Intermittent
16691 - Cylinder 7 Misfire Detected
P0307 - 35-10 - - - Intermittent
16891 - Idle Control System RPM Higher than Expected.
P0507 - 35-10 - - - Intermittent
16689 - Cylinder 5 Misfire Detected
P0305 - 35-10 - - - Intermittent
16687 - Cylinder 3 Misfire Detected
P0303 - 35-10 - - - Intermittent
16686 - Cylinder 2 Misfire Detected
P0302 - 35-10 - - - Intermittent
17539 - Oxygen (Lambda) Sensor: B2 S1: Internal Resistance too High
P1131 - 35-10 - - - Intermittent
17521 - Oxygen (Lambda) Sensor: B1 S1: Internal Resistance too High
P1113 - 35-10 - - - Intermittent
Readiness: 0010 1001

Address 02 -------------------------------------------------------
Controller: 4B0 927 156 BS
Component: AG5 01L 4.2l5V USA 1414
Coding: 00002
Shop #: WSC 00000
No fault code found.

Address 03 -------------------------------------------------------
Controller: 8E0 614 111 A
Component: ABS/EDS 5.3 QUATTRO D10
Coding: 0273004284
Shop #: BB 24334
No fault code found.

Address 08 -------------------------------------------------------
Controller: 4B0 820 043 L
Note: Excessive Comm Errors

Skipping Address 15-Airbags

Address 16 -------------------------------------------------------
Controller: 4B0 907 487 D
Component: Lenkradelektronik D01
Coding: 00103
Shop #: WSC 65535
1 Fault Found:
01426 - Controls in Steering Wheel (E221)
49-00 - No Communications

Address 17 -------------------------------------------------------
Controller: 4B0 920 980 M
Component: C5-KOMBIINSTR. VDO D11
Coding: 03283
Shop #: WSC 00000
No fault code found.

Address 35 -------------------------------------------------------
Controller: 4B0 962 258 J
Component: Central Lock/Alarm D33
Coding: 15885
Shop #: WSC 00000
9 Faults Found:
01371 - Alarm triggered by Door Contact Switch: Driver's Side
35-00 - -
01572 - Alarm triggered by Door Contact Switch: Passenger Side
35-00 - -
01374 - Alarm triggered by Terminal 15
35-00 - -
01370 - Alarm triggered by Interior Monitoring
35-00 - -
01368 - Alarm triggered by Luggage Compartment Switch
35-00 - -
00955 - Key 1
09-10 - Adaptation Limit Surpassed - Intermittent
00956 - Key 2
09-10 - Adaptation Limit Surpassed - Intermittent
01559 - Drivers Door
58-10 - Can't Lock - Intermittent
01573 - Alarm triggered by Door Contact Switch: Left Rear
35-00 - -

Address 36 -------------------------------------------------------
Controller: 4B0 959 760 A
Component: Sitzmemory D05
No fault code found.

Address 45 -------------------------------------------------------
Controller: 4B0 951 178 A
Component: Innenraumueberw. D04
Coding: 00101
Shop #: WSC 00000
No fault code found.

Address 55 -------------------------------------------------------
Controller: 4B0 907 357 C
Component: dynamische LWR D03
Coding: 00020
Shop #: WSC 00000
No fault code found.

Address 56 -------------------------------------------------------
Controller: 4B0 035 195 A
Component: Radio D00
Coding: 00115
Shop #: WSC 00000
No fault code found.

End ------------------------------------------------------

What I was wondering was, does it look like the O2 sensors are bad, perhaps causing the misfire reports and the lean fuel mixture errors? The car acutally runs just fine except when started cold the engine revs up and down for about 15 seconds. I just don't understand how to read all this stuff.
Thanks for any help you might have for me!

 

Just clear the codes and see what comes back. Whatever comes back, if any, then deal with it.

 

I agree clear the codes and see what returns

Also,

did you have to purchase the license from Vag-Com for $99 in order to adjust your xenon's?

or

were you able to access/adjust them using the free version of software?

Sorry to jump off topic. I had no luck trying to access the control for the xenons w/ the free version.

 

thanks for the replys! As for the version I used a friends, not sure what one it was but I believe it was 3x, not the 4.x version. I was able to adjust the xenon lights however they still arent right, there is a bigger issue. Now the left one is a little lower than the right one. I am to the point I am just going to unplug the adjusting motors power and manually set them where I want the beams by rotating the motor by hand.

As for clearing the codes help me understand. I thought I had but it didnt do anything, check engine light never went off. I did a auto scan for all faults, that stuff came up, and I clicked clear faults button. It cleared them from the list on my screen but not on the car, is that not how it's done?

thanks

 

The left (assuming drivers side) should be a little lower than the passenger (right side). It helps to avoid blinding oncoming drivers.

As far as the engine codes. If you did in fact clear them with the engine off, and then started the car and the light was still on, then something still is not right. Recheck all the codes.

I think these two codes are probably causing your Fuel trim problems. Leading to misfires.

17539 - Oxygen (Lambda) Sensor: B2 S1: Internal Resistance too High
P1131 - 35-10 - - - Intermittent
17521 - Oxygen (Lambda) Sensor: B1 S1: Internal Resistance too High
P1113 - 35-10 - - - Intermittent

Could just replace both precat o2 sensors and see what happens. Ask around first, don't take my word for it though.

I would try to clear them again just to make sure you did it correctly the first time.

 

thanks Jeff on the headlights.. Even at the highest setting they are still too low. Odd too because I read online about adjusting them and the lower the number the higher they would point but my car was just the opposite.

Anyway I will try clearing the codes again and had planned on doing the pre-cat o2's but am I doing the procedure correct to clear the faults from the car, ie. doing a full fault scan then clicking clear faults??

 

If the headlights are aimed correctly they are even. You want the hotspots in the same position. Many write ups on how to aim them right. Vag will only adjust them to certain levels, and that's what they will adjust to. The white screws are to fine tune them once you get to the proper height.

 

Since your running too lean and getting missfire on so many cylinders, you should change your fuel filter. A badly plugged fuel filter could cause the missfire. Also, a fuel filter is cheap when compared to an oxygen sensor.
Check each sparkplug that missfired for the correct sparkplug gap and regap if required.
Sometimes, the oxygen sensor is not the problem, but it is the wiring between the sensor and the ECM, which cause the intermittent code. You could just replace the oxygen sensor to see if the problem goes away. Be sure to use an oxygen sensor socket so that the upper part of the sensor is not damaged.