Glad to hear you got that bugger replaced... I was skiing in Banff (eh!) while you were going through this, so pardon me for arriving late to the discussion.
Anyway, for the sake of the archives, I offer
my write-up of Bank 1 O2 sensor replacement . I agree, that black plastic wiring tray looks totally in the way, and I started trying to loosen it to push it out of the way, but thankfully I came to my senses.
