Need help with O2 sensor readings.

I have LS400 2000 model which has 4 Oxygen Sensors.
I think that i may have some problem in my O2 sensors.
if you guys could check this readings and help me with this issue & tell me if these sensors are either functioning correctly or not.

These are readings of O2 sensor on idle without acceleration.


These are readings of O2 sensor with accelerate up to 2000 rpm.


These are readings of O2 sensor back on idle without acceleration.


These are readings of O2 sensor again with accelerate up to 2000 rpm.


These are readings of O2 sensor back finally on idle without acceleration.


Help!

 

No one knows ?

 

It looks good for the most part except bank 2 sensor 2 seems faulty but intermittent. The upstream seems to be working fine. Do you have any drive ability problems or a CEL?

James

 

There No CEL , even no pending DTC