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Channel: Is my catalytic converter bad? - Motor Vehicle Maintenance & Repair Stack Exchange
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Answer by fekeyrse123 for Is my catalytic converter bad?

from the inlet and outlet temps of the cat which are about the same, i'd say the cat is not doing its job...there must be around 200 deg difference between the inlet and outlet temps-outlet being the...

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Answer by Zaid for Is my catalytic converter bad?

Have a look at Test 2 in this answer.According to it, Bank 2 Sensor 2 (B2S2) is pegged rich in the plot, which is fine. Bank 1 Sensor 2 (B1S2) is not fine; it should not be oscillating up and down like...

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Answer by SteveRacer for Is my catalytic converter bad?

Bank 2 Sensor 2 seems stuck rich.I'm more suspect of the downstream Bank 2 sensor - it's a flat line. As long as it's up to temperature, it should show swings back and forth relative to the upstream...

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Is my catalytic converter bad?

I have a 2006 Lexus LX 470 and I’m getting the check engine light on. I have a reader and I am seeing P0430 “ catalyst efficiency below normal (bank 2). I took some data from the sensors and plotted it...

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