P219B Code Chevy Silverado

P219B Code Chevy Silverado. I currently have 90k on her and about 3 months ago my check engine light came on so i plugged it in and got code p219a (air fuel inbalance bank 1 sensor 1) i decided just to replace the upstream o2 sensor and cleared the code. Technically it's air fuel imbalance bank 1. bestjewelrydesignrepair Check Engine Light On 2014 Chevy Silverado from bestjewelrydesignrepair.blogspot.com The code indicates that your chevy silverado’s air/fuel ratio is out of balance (too rich or too lean). A few weeks went by…

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