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p0420 on 2002 rx 300

sa3ma4na

By sa3ma4na
in 99 - 03 Lexus RX300

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sa3ma4na Advancing

sa3ma4na

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I need help diagnosing what the actual culprit of the p0420 that threw up few days ago. I ran my torgue scan tool and I am adding screenshots for better understand.

I am not able to understand the various test. I need some help here.

Pic1 is the mod 6 test, pic2 is the freeze frame of the cel, pic 3 is the wave form of 02 sensor bank1 sensor 2 and the last 2 pictures are the waveform of the a/f sensors.

Screenshot_20161014-155841.png

Screenshot_20161016-131018.png

Screenshot_20161016-173213.png

Screenshot_20161016-173406.png

Screenshot_20161016-173551.png

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