1999 Mercedes Benz E320

Engine Performance problem
1999 Mercedes Benz E320 6 cyl All Wheel Drive Automatic 60000 miles

I have an 1999 MB E320 4-matic, which has the Check engine light on! I have read the diagnostic with OBD 2 reader and it it showing P0304 thru 6 error codes. Which I'm sure you're aware is all of Bank 2. My intuition would lead me to believe it is something in common with all 3 cylinders. The Bank 2 Sensor 1 was reading 0 mV and has been replaced but has not changed the misfire condition. Plugs and wires were replace 9 months ago with also the crank location sensor. What else could cause an entire bank to misfire. Or am I barking up the wrong tree? Thanks
August 26, 2010.

Hello and thanks for donating

The most likely fault here would be the ME-SFI control module seeing as how the plugs and wires have already been replaced.

Aug 31, 2010.
But why would a faluty ME-SFI only have misfires on one bank?

Sep 2, 2010.
The control module could still be signaling the other bank. Have you inspected the MAF sensor by any chance? A faulty MAF sensor will sometimes cause this issue as well. It could even be a fault with the fuel and not the spark. If MAF is found good than may need to check the fuel injectors on that bank.