Ok, I was thinking my MAF sensor was gone bad because it was throwing out the code for it. So I cleaned it up and replaced it back. Now after clearing it up, I get a P0037 code. From my understanding its a downstream o2 sensor, but which side, Passenger or Driver side ,
Could it also be maybe just maybe the MaF sensor is fooling the system thinking its alright but in reality its failing which in turn is throwing off another code? Any help would be appreciated.

**Anyone purchase o2 sensors from RockAuto and can verify if they sell the OE Denso o2 Sensors with the wires, so its just Plug & Play? I found one but not sure it comes complete or I have to splice the wires into my original connector.

http://www.rockauto.com/catalog/more...140&cc=1410635

 

Codes PDF says - is in stickies and JTIS

 

Thanks , but thats the first thing I looked at and it doesn't say precisely if its on the drivers side or the passenger side. Can someone please be kind enough to tell me which side its on?? I know its the down stream o2 sensor but not sure what side. Thanks for helping in advance.

 

It clearly says bank 1

That's a standard.