6 SES codes, could all the o2 sensors went wrong?

[2ndChance]

A SES light came on couple months after my HFC install and because my car was in a shop fixing a minor accident and installing the amuse kit I did not pay attention to it until now that I've changed HFC for test pipes and drove my car after these months.

I got a total of 10 SES which I got rid of by clearing and resetting ecu and after that only 4 remained. but after a short drive 2 more pops in. Now I have 6 SES codes.

Since they say bank 1 and bank 2 I wonder if it is possible that ALL of the sensors, post-cat and pre-cat, driver and passenger side went wrong at the same time, or is there some kind fuse that controls all these sensor?

From what I've been reading, first two code 1148/1168 are related to pre-cat, and other two 0031 and 0037 are post cats. I've checked the wiring and they seemed to be ok, well connected and no melted wire or similar. If there was only 1 or two codes, I would gladly swapped sensors for new ones but all 4? I really cant think of one single cause for such coordinated failure.

For those who have solved this issue, please help.