please help with my bro 96 path stalling

[02pathfinderle]

my brother has a 96 pathfinder it has bout 140k miles and he has been having a problem while he drives the car will just stall out with no warning

he is able to start it right back up though afterwards

we pulled codes

po325 knock sesnsor bank 1, single sensorpo136 o2 sensor circuit malfunction , bank 1 , sensor 2po156 o2 sensor circuit malfunction bank 2 , sensor 2

im assuming that means i need to change the O2 sensors and the knock sensor but can this be the reason why the truck keeps stalling? , sumdays it will drive with no problems and other days it wont

also i dont know which ones to buy on oxygensensors.com it gives me 4 options

Sensors are available for the following locations: 1. PRE-CAT LEFT 2. PRE-CAT RIGHT 3. POST-CAT LEFT 4. POST-CAT RIGHT A/T

[pathfinder9035]

man it sounds like it can be more than jus the knock sensor if it stalls out. check your maf sensor to make sure there is no malfuction too.

when your knock sensor go bad the car usually just makes pigging noises or knocks which is very bad but it shouldnt stall.

replace your knock sensor and all your o2 sensor or u can test them using a voltmeter and follow manufacturer specs.

also check the wiring harness for the maf and the o2 since the code is circuit malfuction which could mean there is something wrong with the wiring. the problem could simply be the grounding. and if u do replace the oxygen sensors it is very smart if u just buy oem or equivalent because if u buy the ones that u have to splice wires and u connect the wrong wire it could screw up your ecm which will cost u even more to repair.

[02pathfinderle]

thanks for ur info and help , would u happen to know which O2 sensors i need from the codes we pulled?

we pulled codes

po325 knock sesnsor bank 1, single sensorpo136 o2 sensor circuit malfunction , bank 1 , sensor 2po156 o2 sensor circuit malfunction bank 2 , sensor 2

below from oxygensensors.comSensors are available for the following locations: 1. PRE-CAT LEFT 2. PRE-CAT RIGHT 3. POST-CAT LEFT 4. POST-CAT RIGHT A/T

[pathfinder9035]

THINK SENSOR TWO MEAN THE BOTTOM ONE. NOT SURE. IF U GO TO ADVANCE AUTO OR SOMETHING OR AUTOZONE THEY WILL TELL U EXACTLY WHICH IS WHICH. I THINK WHEN U INSTALL THE O2 SENSORS U HAVE TO TAKE IT TO NISSAN TO REPROGRAM IT... NOT SURE THOUGH COULD BE DIFFERENT FOR THE 3.3. BUT THE MAF IS PLUG AN PLAY