2011 Chevy Equinox P0420 Code Fix

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P0134: O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1) - In

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chevrolet - my 2011 Chevy Equinox check engine light on, reads code

chevrolet - my 2011 Chevy Equinox check engine light on, reads code

WHAT CAUSES CODE P0420 ENGINE LIGHT CHEVROLET, CHEVY, GMC, BUICK