Xterra SE 2WD V6-3.3L (VG33E) (2002)
Oxygen Sensor: Locations
IACV-AAC Valve / Heated Oxygen Sensor 1 (Bank 1) / Knock Sensor / Fuel Pressure Regulator / Heated Oxygen Sensor 1 (Bank 2)
Heated Oxygen Sensor 2 (Bank 2) / A/T Oil Pan / Heated Oxygen Sensor 2(Bank 1)
Heated Oxygen Sensor 2 (Bank 2) / Cranckshaft Position Sensor (OBD) / Transmission