Thread: LEAN Bank 1
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Old 10-05-2012, 09:17 PM   #5
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Join Date: Nov 2009
Location: Fairfax, VA USA
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My Ride: 330CiC, M5, X5, E93
If it is a 4 cylinder engine, then it is most likely Cyl #1 & #2, however, you need to find out how many O2 sensors are on the engine. Likely 2 O2 sensors, not sure you would have the post-cat O2 sensors like we have here in North America?

You can probably check if you are unsure, it should show you how many O2 sensors the engine has.
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