3 O2 sensors fail at once?

[DFW02S]

Have you ever heard of that?
It apparently happened to my car.

To be clear, it was both pre-cats and one secondary.

[thstone]

My initial reaction is: possible but not probable.

And I don't mean to cast any doubt on the veracity of your statement, simply that those are some pretty long odds!

[DFW02S]

I agree with you, hence my qualifier, "apparently".

[Burg Boxster]

It's not likely two would go at same time... let alone three

unless a bigger issue of major fouling is going on to ruin/coat them w/ something.

Did you use a multimeter to individually test?

[DFW02S]

Evidently they tested dead. There must be something else going on as you allude to.

[AndyA6]

I had both secondary sensors fail at the same time..... nobody knows why.....

[doragman]

I've had 3 go out -- but over a 5000 mile window -- do it your self - Rock Auto Bosch OE match < $100 each.

[DFW02S]

Originally Posted by doragman

.... -- do it your self - Rock Auto Bosch OE match < $100 each.

Dang!
1 day too late.
$170 at Pelican, the local dealer wanted 259 each.