Nissan Repair: Nissan Oxygen Sensors, oxygen sensors, oxygen sensor

Question
Hello

I have a 2002 Nissan Quest 3.3 Ltr Minivan and suspected the engine was running "rough" because of a bad Oxygen sensor.

My guess was right, on inspecting the lower Oxygen sensor, the downstream one near the catalytic converter, I found that the wires were broken at the sensor and there was no sign of the connector or where the wires go. This makes it difficult to replace as I do not know what type of sensor or connector to buy,(there are  multiple choices) and where it is connected.

Grateful for your help.

Answer
Trevor,

I would go to rockauto.com and enter your vehicle information and purchase the oxygen sensor.  Buy a direct replacement and it should fit with no problem.  The connector is up against the fire wall.  Look up from the sensor and you should see it.