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THE HEATER CIRCUIT IS PART OF THE OXYGEN CENSOR TWO OF THE WIRES HEAT THE CENSOR. JUST REPLACE THE CENSORS THAT SHOULD BE EASY.

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Q: Where and what is the heater circuit for oxygen censor 1 in bank 2 on 2002 Chevy s10 4.3 v6 you had the code read and this is what it came back with It is a 2002 s10 crew cab 4wd?
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