Hey Everyone, long story short, the SES light is on and I went to AutoZone for code read. Looks like its the passenger side oxygen sensor (before the CAT). I'm just wondering, assuming it is truly the O2 sensor and nothing else, how long can I drive in this condition? To me, it seems the truck is running just fine - starts strong, idles fine, has full power on acceleration, etc.

Thanks to all who answer!

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2005 X5 4.4i N62 86k Original Owner