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1994 Chevrolet Blazer 5.7L V8 with engine code P1143, what is the problem?

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1994 Chevrolet Blazer 5.7L V8 with engine code P1143, what is the problem?

Vehicle: 1994 Chevrolet Blazer 5.7L V8

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You probably have to replace the Front Heated Oxygen Sensor Bank 1

P1143 CHEVROLET - HO2S Bank 1 Sensor 3 Lean System or Low Voltage
Read more: https://www.autocodes.com/p1143_chevrolet.html

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