i got a bad oxygen sensor and i need to replace it. The question i have is the bank 1 sens1 is $130 and the bank 2 sens1 is $80. Is there a difference? as far as i know there is a difference between pre and post cat sensors but a pre cat sensor is a pre cat sensor, no? plugs are the same. I actually have my bank 1 and bank 2 switched right now and all it did is switch the cel from bank 1 to bank 2.
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