What fuse is tied to O2 sensors?

Hi everyone! I'm finding the answer to this online frustratingly difficult. Hoping you can help...

Do you know which fuse is tied to the O2 sensors? Its my understanding there is no dedicated fuse for them...but rather are controlled via some other system's fuse.

P.S. This is in reference to an error code P0156 which indicates Bank 2 sensor problem. I recently replaced both catalytic converters...as well as all 4 O2 sensors (Denso brand). Trying to see if its as simple as replacing whatever fuse is linked to them.

Thank you!

 

Did you figure which fuse?

 

Hi Oz! I found there was no dedicated fuse for O2 sensors.

 

Dang
I'm kinda have the same issue.
I installed long tube headers from dirtydeeds as well as factory cats with dirty deeds mid pipe and full 3 inch exhaust. It's been running great until I had a p0156. I went ahead and bought 4 oem sensors and replaced and it was fine for a couple thousand miles. Until recently it came back. If I delete the code it takes about 500 miles until it comes back on. I've inspected the 02 connector on pipe and harness and can't seem to find anything wrong

 

Other than the code popping up the truck start and accelerates fine, whether I'm lightly accelerating or hard acceleration and no drop in power or mpg

 

Are you getting any other codes with it? I found a good video which points out other possibilities: https://www.youtube.com/watch?v=zP8uY6rBQog&t=153s

 

Nope that's the only code