[styven7]

My 2005 OB LLBean 6 has a CEL with p0057 code indicating a bad bank 2 sensor 2 O2 sensor. I ordered the new sensor and plan on changing it myself but I just want to confirm that this is the driver's side rear sensor so I don't replace the wrong one. Also, is it wise to unhook the negative battery terminal before I start? Any help would be appreciated.

 

[1 Lucky Texan]

clear the code and see how quickly it returns.

 

[styven7]

I did 1 Lucky, it comes back almost immediately.