That would be a sensor located downflow of the catalytic converter. Not up on the the manifold, that would be sensor1. I believe it is under the car about half way back.
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SOURCE: Toyota Highlander 2004 needs O2 sensor bank 2
behind the cat, you need to know on that car which is bank 2 left or right, the 2nd 2 is last sensor. beware this might work which means the cat has failed
SOURCE: problem locating the oxygen sensor for my 2000 Toyota Estima
drivers side ,sensor before converter
SOURCE: need to replace bank 2 sensor 2 on 2003 toyota
Bank 2, sensor 2 is a heated O2 sensor located below (after) the catalytic converter on the passenger-side. When this sensor gets clogged and/or goes bad from rust and heat fatigue, the voltage drops low enough to cause the electronic control module to register error code P0161, which then causes the check engine light to come on.
To replace Bank 2, sensor 2, remove the debri shield from just behind the front bumper, underneath the vehicle. There will be 10 bolts holding it on (10mm, I believe). After removing it, look toward the center of the newly exposed area and you will see 2 finger-like objects projecting out from the engine with wires coming out of each. The one on the left (passenger-side) is bank 2, sensor 2. The one on the right (driver-side) is bank 1, sensor 2.
I got my direct-fit sensor online for $55 from Remart Auto Parts. I know it is tempting to get the universal-fit type and save the cash. But after doing that once, I wouldn't care to do it again.
I found a YouTube video showing pictures of where the two lower (after catalytic converter) sensors are located. While the video only points out the driver-side sensor (bank 1, sensor 2), it's easy to spot the other one being only inches away.
http://www.youtube.com/watch?v=TgQtZci2oOg
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SOURCE: Where is the oxygen sensor, bank 1 sensor 1,
B1S1 means first (upstream) , closest sensor to cyl. head , usualy at exhaust manifold.Bank 1 is cyl. head with cyl.#1 if you have V6 engine.
Best choice for brand - Denso.
SOURCE: How to locate the rear
will try to help, bank one 02 sensor is closest to exhaust manifold, bank 2 is further away, sounds like you need location to bank 2 look in front of catalytac converter. it will have a green wire attached to it leading directly inti the exhaust system.you will need a special socket for removal though,which you can purchase at autozone or advance auto, or a local auto parts dealer. as always, thank you for choosing fixya.com for all your automotive questions. look forward to assisting you in the future.
http://engine-codes.com/p0302_toyota.htmlForum CodePossible causes- Faulty spark plug 2 http://engine-codes.com/p0135.htmlForum CodePossible causes- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit2,785 views
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I have a 2011 Toyota Venza that had a p0158 code bank 2 Sensor 2 and I found that it's located following the front manifold you have the one at the top then if you follow that down you have another one that's bank 2 Sensor 2 the first one is bank 2 sensor 1 if you follow the exhaust coming out of the back by the firewall that's Bank One sensor 1 and Bank 2 Sensor 2 is located on the exhaust pipe near radiator and oil pan the part store ask me was it right or left but looking at it I only see top and bottom so that sensor 1 and the bottom is Sensor 2 the best thing to do is to take it off and take it to the auto parts store to match it up what has a female end and the other has a male end at the wire connection.
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