Ok so I have some issues with my oxygen sensors lately!

I have replaced all of my oxygen sensors with Herco replacement sensors. Three of the error codes went away except for bank 2 position 2.
I have replaced the oxygen sensor now with a OEM sensor, thinking that the replacement sensor wasnt working. I am getting voltage to this sensor.

Also I have changed the crank shaft position sensor and the secondary air injection pump.

I am getting codes for bank 2 position 2 with the secondary air injection pump code also. I checked all fuses and are ok. I checked the cpu boards and cleaned the connections. I had also taken apart the EGR valve and cleaned the carbon off of the valves.
I check the voltage to my MAF sensor and am getting 5.46 V

Any other suggestions.