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2004 Hyundai Sonata Question: which is the bank 1 for the O2 sensor?

 

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laine, Imperial Beach, CA, November 23, 2012, 07:17
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OBD codes 421

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  • Answer #1

    your.mechanic November 23, 2012, 08:54
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     Master

    Bank one is on the head with number one cylinder.

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    laine, November 23, 2012, 09:51
     Rookie

    On my car- there are two sensors and both are on the manifold. One is on the top of the manifold, the other is on the bottom of the manifold. Which is bank 1 sensor- since I only have one exhaust.

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  • Answer #2

    ziptie12 November 23, 2012, 15:56
     Master

    4cyl. Sonata? Front is B1 S1 , rear is B1 S2 .

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