squishball

MIL light came on (not blinking). Vag-com DTCs indicate multiple misfires (cylinders 1, 2, 3, 6). Since both banks are involved, I'm guessing it is not the coil packs or spark plugs (less than 7k miles on them). Could it be the ignitor amps/Power Stage Output Modules that sit atop the air box? Thanks

http://www.blauparts.com/proddetail.asp?prod=GB32522

5 Faults Found:
16684 - Random/Multiple Cylinder Misfire Detected
P0300 - 35-00 - -
16685 - Cylinder 1: Misfire Detected
P0301 - 35-00 - -
16687 - Cylinder 3: Misfire Detected
P0303 - 35-00 - -
16686 - Cylinder 2: Misfire Detected
P0302 - 35-00 - -
16690 - Cylinder 6: Misfire Detected
P0306 - 35-00 - -
Readiness: 0000 0000

K2audi

Swith the plugs between the 2 and see if you get missfires on 4, 5, 6, and 3. If this is the case. you probably have 2 faulty ICM's (Ignition Control Modules...these sit on top of the air box)

squishball

Update on misfire: Cylinder 5 exhibits the majority of misfires, exceeding 15 within a cycle of measuring block 016. However, it doesn't appear to be electrical related problem. Swapped out 2 ignition modules -- no effect. Swapped cylinder 5 & 6 CPs -- no effect. Swapped out cylinder 5 & 6 spark plugs -- no effect. Next step fuel injectors. Any other suggestions.