E46Fanatics - View Single Post - DIY: Post-Cat O2 Sensors + Pre-Cat O2 Sensors
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Old 05-27-2008, 07:30 AM   #35
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Join Date: Feb 2006
Location: London UK
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My Ride: BMW 335i 2007 Coupe
Superb write up, excellent thread. I thought I'd add a how-to for the other part of the job, if you're changing your sensors you've probably got a fault light which needs clearing. Here's how:
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