RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

2004 RX330 Oxygen Sensor confirmation

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Old 09-26-16, 04:20 PM
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andyN
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Default 2004 RX330 Oxygen Sensor confirmation

hi all
can someone help me identify what i need i got a error code P0037. Engine check light and VSC is also on.
Dense part are for the sensors are
B2S1 = Denso 234-9042
B1S1 = Denso 234-9042
B2S2 = Denso 234-4509 (passenger side)
B1S2 = Denso 234-4168 (driver side)

Is this correct ? Or can you suggest other brands and parts # ?

Thank you in advance
Andy
Old 09-26-16, 04:42 PM
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JoeInHNL
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You can check Denso part numbers here:

http://densoautoparts.com/find-my-pa...icle-selection

To clarify, Bank 1 is the right side (next to firewall), bank 2 is the left side (front of the car). So assuming passenger side equals right side your numbers are correct.

I replaced B1S1 with a Denso sensor purchased on Amazon. Fit like the original. Denso is the OE manufacturer.
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