2013 Chevy Equinox P0420 Code
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2015 Chevrolet Equinox error code p0411 secondary air injection ???? I
P0420 code: catalyst system efficiency below threshold (bank 1) 2015 chevrolet equinox error code p0411 secondary air injection ???? i Equinox cause error causing ajar circled slid cartalk
![P0420 Chevy Equinox Issue and Solutions to Fix Properly - UNCRD LAC](https://i2.wp.com/www.uncrdlac.org/wp-content/uploads/2020/11/P0420-Chevy-equinox.jpg)
![P0420 Code: Catalyst System Efficiency Below Threshold (Bank 1)](https://i2.wp.com/www.obd-codes.com/images/p0420.jpg)
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