help with pathfinder stalling !

[02PATHFINDER]

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 sensor

po136 o2 sensor circuit malfunction , bank 1 , sensor 2

po156 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

[Simon]

You need post cat, left and right O2 sensors. If they're really bad, they could cause driveability issues.

[Precise1]

It can't hurt to check the wiring/connections before you spend the $. Should just take a few minutes.

 

Also, there has been a rash of ignition switch problems as of late. While you probably still need to check/replace the other items, it would be a good idea to check the ignition switch/connections also.

 

B

[silverlion]

I had a similar issue with the truck stalling when I would come to a stop. It threw out all kinds of codes. I read somewhere, maybe on this site or a Nissan Repair site, about the throttle pos. sensor being bad or in need of adjustment. Luckily, mine just needed adjustment. Been running fine and no codes ever since.