O2 Sensor Hell

[macleanflood]

Did you get DTCs with both of those sensors? Maybe going above 0.9V is not really an issue? Or maybe the engine is running too rich because of an unrelated issue?

Andy

.9v isn't exact science. The correct explanation would take pages.

It's not much over .9v.

But it is over...

I chased this neon rainbow for a couple of months too.

-Mac

 

[Lawnchair04]

Check spark plugs? I got a code for bank 1 sensor 2 chased it for awhile, pulled the plugs and 2 of the 3 in bank one were missing the platinum tips which presumably was causing a rich condition by not burning the fuel properly. Replaced plugs with fresh iridium and no more code. Worth a look maybe.

 

[AndyA]

Check spark plugs? I got a code for bank 1 sensor 2 chased it for awhile, pulled the plugs and 2 of the 3 in bank one were missing the platinum tips which presumably was causing a rich condition by not burning the fuel properly. Replaced plugs with fresh iridium and no more code. Worth a look maybe.

Thanks. Good idea. I replaced them 4,048 miles ago but I will double check what they look like now. Andy