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Old 03-11-2008, 12:06 PM   #13
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Join Date: Oct 2007
Location: Wisconsin
Posts: 103
My Ride: 2001 330i
So looking at the diagram, it should be #2 sensor (one closes to the firewall)?
Yes. Bank 2 is the header closest to the firewall.

If you have to do bank 2, sensor 2, then it is the oxygen sensor that is more difficult to reach (sensor furthest from the center of the car).
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