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I totally emptied the catalyst converters, then I got Check Engine light due to codes P0420 & P0430. Can I unscrew the sensors, hang them somewhere in outside air, and plug the holes? Any other ideas?

Vehicle: 2006, Jeep, Grand Cherokee Limited, 4.7

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P0420 Catalyst sytsem below threshold Bank 1

P0430 Catasyt system below threshold Bank 2

The CK ENG LT was design to protect the catalytic convertor and the catalytic convertor is designed to protect the enviroment. There is nothing you can do. The purpose of the upstream 02 sensor is to maintain fuel control and fuel economy.

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