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2003 Toyota Solara Question: Which O2 Sensor is the B2, S1. And is it upstream or downstream?

 

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Bigroadhog, 3.0L V6, Walhalla, SC, September 15, 2013, 05:42
 Rookie

Toyota diagnosis as to the reason my check engine light is on. B2-S1 O2 Sensor is bad..

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  • Answer #1

    Tbone1980 September 15, 2013, 06:09
     Journeyman

    that would be an upstream, sensor is located in or near the exhaust manifold, would be a better option to replace both bank 1 and bank 2 sensors at same time..

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    Bigroadhog, September 15, 2013, 06:12
     Rookie

    Thank you, I will follow your advice to replace both sensors..

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    Tbone1980, September 15, 2013, 07:42
     Journeyman

    NO problem

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  • Answer #2

    joelburke26 from Joels Auto Service, September 15, 2013, 06:14
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     Master

    bank 2 is the side closest to the front of the car.sensor 1 is the upstream or pre-cat.

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    Bigroadhog, September 15, 2013, 06:17
     Rookie

    Thank you for the information and your time ..

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