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Tiago@VRSF · 11-13-2012, 09:14 PM

Gray o2 sensors go on the short (passenger side) and black sensors go on the long (driver side) pipes. Almost any front o2 code involves incorrectly installed o2 sensors

11-13-2012, 09:14 PM	#16
Tiago@VRSF Drives: E92 335i, E92 M3 Join Date: Dec 2007 Location: Hudson, MA Posts: 2,803 iTrader: (62) Garage List 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00] 2009 BMW M3 [0.00]	Gray o2 sensors go on the short (passenger side) and black sensors go on the long (driver side) pipes. Almost any front o2 code involves incorrectly installed o2 sensors