Nissan Repair: 99 pathfinder 02 sensor, road debris, sensor circuit

Question
Hi Von:
 I'm getting a check engine code PO158( 02 sensor circuit high voltage,bank 2 sensor 2).I know this vehicle has four 02 sensors,but which one is bank 2 sensor 2? Will replacing this sensor be enough to solve the problem or could something else be causing this code?
  Thank you
   Dave
P.S. Almost forgot-1999 pathfinder

Answer
Dave,

Passenger side back sensor.  Before I would change the sensor make sure that there is no damage to the wires.  Sometimes road debris can damage a wire and that will throw the code.  If you have the time and you like to tinker you can switch the passenger side sensor to the drivers side and see if the code goes from one side to the other.  I have done this on other cars to see if it is the sensor or the wiring.  It is alot cheaper to diagnose with parts you already own.  Get a 22 millimeter wrench and O2 sensor socket to make the job easier.