Just to add my $0.02.... The Sunday before Thanksgiving I had to drive from Atlanta to Va. Beach, Va., as my aged Grandfather was scheduled for surgery and it was feared he would not survive (He
came through OK). On the way back early Tuesday morning, I noted a couple of times where the
car seemed to "hiccup" while running under cruise control at about 80 mph. It was quite cold and
raining. Long to short, I took it to the dealership service center, and they reported that I had codes
for 2 O2 sensors. Both were replaced. Unfortunately, this was not the real cause of the "hiccup".
As noted in the thread "Extended Warranty (Service Contract) Shennanigans", the real culprit was
the IC water pump failing (again). So, this is the second time I've had to replace O2 sensors, as well as the second time I've had to replace the IC water pump. I would suggest that the O2 sensors are as well built as are the OEM IC water pumps, and you will probably need to replace yours.

BTW, Woody, and others suggested swapping your O2 sensors. Is it that easy? I'm wondering
because my service center required the car for a whole day to replace these. I would not believe
it should take a whole day to replace these, but the service adviser said they were starting the swap out first thing in the morning. I kinda got the impression that this was not an "easy" task.
So, if it is easy enough to swap them from side to side, I'm wondering if perhaps I might be up to
this task should these fail again. Are they welded in, screwed in, or what? I don't know, but I do know that I've no love for the monster truck (big a** Ram truck) the rental agency put me in. Makes
me feel like I'm back behind the wheel of a tractor trailer.

Coyote (hoping the new IC pump arrives today, so I can get rid of this monster truck)