Oxygen sensors from amazon

[TORCH]

I have the VSC/VCS off, check engine light thing going and it's time to fix it. The code indicated either Cat or downstream oxygen sensor malfunction. Has anyone used these denso plugs off of amazon and how many do I need? I see there is a downstream left and right should I replace both at the same time or is there a way to tell which one is bad? Thanks in advance.

http://www.amazon.com/Denso-234-426...bs_auto_2?ie=UTF8&refRID=0TCG311SYEQBD62P7086

 

[amalik]

If you search the 4th gen subforum for the exact OBD II code (Instead of a description of the code), you probably will run into a thread where other people had the same code and somewhere in that post should be the right Denso or Toyota PN for the sensor.

 

[TORCH]

I have found conflicting info on different threads and from the guy at O'reilly. Is Bank 2 on the V8 on the driver or passenger side? Just want to be sure before i order parts.

Also, with 140K miles would you replace both the downstream sensors (they are both original) or just the faulty sensor? I assume the other side will go at some point so I am thinking about just replacing it now. Thanks.

 

[black4vcobra]

I have found conflicting info on different threads and from the guy at O'reilly. Is Bank 2 on the V8 on the driver or passenger side? Just want to be sure before i order parts.

Also, with 140K miles would you replace both the downstream sensors (they are both original) or just the faulty sensor? I assume the other side will go at some point so I am thinking about just replacing it now. Thanks.

bank 2 is the side that has cylinder #2. Pretty sure it's the passenger side though with the V8 and opposite with the V6

EDIT - confirmed, bank 2 is on the passenger side, link with pics showing cylinder layout - https://images.search.yahoo.com/sea...ta+4.7l+firing+order&fr=yfp-t-764&fr2=piv-web