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Which side is Bank 1 on Nissan?

Author

Zoe Patterson

Updated on March 14, 2026

Which side is Bank 1 on Nissan?

Registered. Bank 1 is passenger side in the VQ40, bank 2 is driver. Upstream and downstream you’ve got correct.

Is O2 sensor bank 1 sensor 1 upstream or downstream?

As far as oxygen sensor location goes, things are quite simple: Sensor 1 is the upstream oxygen sensor. It is the sensor that measures the oxygen content in the exhaust, providing an input to the computer, which determines how to adjust the air/fuel ratio. Sensor 1 is the sensor closest to the engine.

Is bank 2 sensor 2 upstream or downstream?

Bank 2 Sensor 1 means Upstream Left/Front; Bank 1 Sensor 2 means Downstream Right/Rear; Bank 2 Sensor 2 means Downstream Left/Front.

What is the difference between bank 1 and bank 2 on O2 sensor?

Bank One is always the bank where cylinder number one is located. On the Corvette it will always be the driver side. Bank Two is the passenger side. Sensor 1 on Corvettes is always the sensor that is closest to the exhaust port of the engine.

Is Bank 2 driver or passenger side?

Bank 1 and bank 2 simply refer to either side of the engine. Bank 1 is on the side with cylinder 1. Bank 2 is the side with cylinder 2. Most commonly Bank 1 is towards the front of the car if it has a transverse engine.

Is Bank 1 driver or passenger side?

Bank 1 is driver side, yes.

How much is a O2 sensor for a Nissan Maxima?

Nissan Maxima Oxygen Sensor Replacement Cost Estimate. Labor costs are estimated between $56 and $70 while parts are priced between $381 and $481. This range is based on the number and age of Nissan Maxima’s on the road.

Where is the O2 sensor located on a Nissan Maxima?

Your Nissan will have at least two oxygen sensors. One O2 sensor is upstream (Bank1-Sensor1 ) of the catalytic converter and can be accessed from the top of the engine. One or two sensors will be downstream, B1S2 and B2S2.

Can I use the same O2 sensor for upstream and downstream?

A: Each vehicle is different in the amount of O2 sensors they have. A: The upstream sensor threads into the pipe coming from the engine, closer to the front of the car, and the downstream sensor threads into the catalytic converter, more toward the rear of the vehicle. They are not interchangeable.