Ive been getting some check engine lights lately on and off and the mechanic got a code P2631 bank 2 sensor 1.
Does anyone have the part number? I think Its upstream front but still unsure of which one to buy.
Appreciate your assistance.

 

The part number associated with the code is 36531-RDM-A01 (#10 in the diagram)

 

I have P0137 low voltage bank 1 lower.. my gas is HORRIFIC.. has your gas been altered?