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2005 Chevrolet Impala SS V8 with engine code P1133 code what is the fix? What does this code mean?

Vehicle: 2005 Chevrolet Impala SS V8

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P1133 H02S insufficient switching Sensor 1

This mean the H02S sensor on Bank 1 is not operating up to its manufactuer setting, this usually due to the H02S degrading due to mileage and age, If a tune up has not been performed it may need one
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P1133 Chevrolet Code - HO2S Insufficient Switching Bank 1 Sensor 1
Read more: https://www.autocodes.com/p1133_chevrolet.html

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