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Where is the oxygen sensor for bank 1 sensor 2 located?

Need help locating the oxygen...

Need help locating the oxygen sensor for bank 1 sensor 2 on Rav4 2.0 2003 model. I know there are 4 of them and looking in, I can see 2. I hope it is one of them. Thanks a lot! DLD213

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Answered in 7 minutes by:
4/5/2010
Doug
Doug, ASE Certified Technician
Category: Toyota
Satisfied Customers: 8,624
Experience: Toyota Expert Certified through 2007
Verified

Your layout is reversed from most vehicles, as the pipes cross over each other, as shown in the following diagram:

graphic

You will need to access the sensor from the bottom of the vehicle, however. Access from the top is very difficult. From below is not bad at all however.

You will need an O2 sensor socket, or a 22mm wrench to get it out. I strongly recommend using a generous amount of penetrating oil or similar an hour or so before attempting to remove the sensor.

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Customer reply replied 7 years ago

Is bank 1 on the driver side or passenger?

I ordered a replacement using the bank 1 sensor 2 and the service rep placed the order but the info detail was listed as passenger.

I'm assuming sensor 1 is the top and sensor 2 at the bottom.

Does it matter if it's bank 1 or 2?

The sensor you need to replace is the drivers side lower sensor, circled in the picture above. You are correct, sensor 1 is the upper sensors, and sensor 2 is the lower sensors.

It absolutely matters bank 1 versus bank 2. If your code is bank 1 sensor 2, you must replace the sensor circled above (driver side, lower).

Doug
Doug, ASE Certified Technician
Category: Toyota
Satisfied Customers: 8,624
Experience: Toyota Expert Certified through 2007
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