P0420 Stoner code and it's not what you think it is...
 

looks like something went bad

the O2 reading 0.00 volts at idle (randomly hits 0.00) in Closed loop and has a stoner code p0420
Long Term fuel trims when the code was stored was +32% on both banks

it's on the AFM bank on cylinders


sensor #2 is NOT tracking sensor 1 on both banks


Bank 1 sensor 1 shows 0.00 volts @ idle and gives a P0420 Code
bank 2 sensor 1 show 0.05 volts @ idle



sensor 1 = pre cat
sensor 2 = post cat


the cat temperature is fine 480-550C and is tracking the throttle/fuel input like it should... sometimes the engine will stumble because of it at idle