P0420 Live Test - Bad Oxygen Sensor?

Joined
Apr 15, 2017
Messages
20
Location
Richmond, KY
Had a P0420 pop up with a check engine light/VSC OFF/TRAC light. When I ran a Techstream live test, this is the graph on an engine rev at about 3500rpm. Can anyone tell me if this confirms the Bank 2 Sensor 2 oxygen sensor is bad? I believe the threshold is something like 0.49, and it looks like this is going above that mark.

20200728_132459.jpg
 
Joined
Nov 4, 2007
Messages
11,934
Location
Colorado
Try playing with fuel trims in tech stream utility. Run it max rich, that max lean. You'll then see if BK 1 sensor reacts.
 

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