The other day i saw my engine light turn on while i was driving so since i was near autozone i decided to let them read it then. It figures that it couldnt be just 1 code it had to be 2 of them. well these are the 2 that decided to **** me off. PO139, P1147 and to think having 34xxx miles was a good thing. Can any1 help me find where their located. Maybe even a diagram. THX guys

 

sensor2 bank 2 and sensor1 bank2 ( high and low voltage threshold) sound about right? these 2 are located near the pre-cat. Q: do you have a y-pipe on your car and are you Cali spec emissions?

 

Everything is stock and no im not a Cali spec

When i checked what the codes were they say its Bank 1 not Bank 2

 

if you drive a 2k2, i'm pretty sure your a cali spec.

 

All 2002s are CALI spec, its in the Stickies.

You're right. P0139 and P1147 are codes for Bank 1.

 

Btw..

 

oops my bad

 

Damn i never knew 02 maxima were cali spec..Thx

 

but how do i find out which O2 sensor i need to replace....