where is the heated oxygen sensor bank 1 sensor 2 located on a 2009 chevy aveo ls?and where is the cheapest part

Allen Duggan

Asked by Sep 27, 2016 at 04:18 PM about the 2009 Chevrolet Aveo Aveo5 LS

Question type: Maintenance & Repair

my check engine light is on.auto zone after checking said it was the heated oxygen sensor(h02s)heater resistance-bank 1 sensor 2.i need a cheap replacement because i,m on ssdi

2 Answers


Bank one (heated) is always the o2's before cats. But I always like to check why it is setting this code and I find that many times the o2's are good and it is a vacuum leak or dirty MAF or IACV sensor or a bad spark plug or plug wire or dirty PCV valve. I would have or check these out before throwing good money away.

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Best Answer

Hey I made a mistake here on my post before. Bank 1 sensor 2 is after cat not before cat sorry I ran that back through my mind and realized I had said that wrong.

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