P0420 Error code

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Joined
Apr 28, 2016
Threads
20
Messages
172
Location
Georgia,USA
I am getting this code now, I have a Bluetooth ODBII scanner and I get live feeds from the sensors. Strangely, I only appear to get bank 1 sensor 2 and bank 2 sensor 2 days streams on the O2. I get no data at all from either bank on sensor 1. Is that normal? I have data streams saved from Torque Pro and the real time graph paid plugin, which I would be glad to post. I uploaded screen shots of the data streams from a 3.4 mile drive and a 5.7 mile drive. You can see that there are only two O2 sensors reporting data...Shouldn't I see voltage data for four sensors? If so, given that I can't get a reading from sensor 1 on bank 1 or bank 2, what should my next diagnostic step be?

Screenshot_2016-09-22-14-23-20.webp


Screenshot_2016-09-22-14-22-24.webp
 
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