P0420 Engine Code Chevy Equinox

Dr. Alford Carroll 01 Dec 2023

I have a 2018 chevy equinox with the 1.5 engine that will start up and P0420 code: catalyst system efficiency below threshold (bank 1) Chevy equinox p0234 code: causes + how to fix

P0140 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 2

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