My check engine light has been going on and off for a while so i decided to go and get it checked out. It started about 6 months ago after i installed my warpspeed B-pipe. at first i thought that i was an exhaust leak before the cat but this O2 sensor if behind the cat i think. What to do. Please help

 

I think i found the O2 sensor i need at jerryromenissan but the price cant possibly be right. He wants it for only $50. Dave b wants it for $108. same part number and everything.

 

well if its the same number go with jerry rome i bought new maf from there and everything went fine

 

The part number that i have been given is 226A04L713, does this seem to be the sensor for bank1 sensor 2. p0140 is the code that was pulled at autozone and it stated that the sensor on bank1 sensor 2 was bad.