What is the purpose of the oxygen sensor in the exhaust system on Nissan Pathfinder?

The oxygen sensor in the exhaust system reacts with the oxygen in the exhaust to produce a voltage output that varies depending on the oxygen content. This feedback signal is used by the PCM to determine the needed fuel injector pulse width and control the air/fuel ratio. The ideal ratio for emissions, fuel economy, and engine performance is 14.7 parts air to 1 part fuel. The post-converter oxygen sensor on this car is used for the catalyst monitor system and produces a slower fluctuating voltage signal. The PCM can detect oxygen sensor problems and set diagnostic trouble codes. To test the sensor, backprobe the signal wire terminal of the oxygen sensor connector and monitor the voltage. While pre-converter should switch actively between 0.1 and 0.9 volts, post-converter should also range from 0.1 to 0.9 volts but not switch actively . Check battery voltage supply and ground circuits to heater of oxygen sensor, check resistance of heater . In case an open circuit or excessive resistance is indicated then replace a faulty Oxygen Sensor . When replacing a sensor ensure that exhaust system has cooled properly follow proper handling procedures . Raise vehicle, disconnect electrical connector, unscrewed using a suitable wrench or socket, apply anti-seize compound at threads and tighten securely . Lower vehicle and reconnect electrical connector.

Genuine Nissan Pathfinder Oxygen Sensor

Oxygen O2 Sensor

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62 Oxygen Sensors found

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Nissan Pathfinder Air Fuel Ratio Sensor
Part Number: 22693-3RC0A
$239.29 MSRP: $354.32
You Save: $115.03 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Replaces: 22693-1MR0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2013-2015 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Pathfinder Air Fuel Ratio Sensor
Part Number: 22693-9HP0A
$244.69 MSRP: $362.32
You Save: $117.63 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assy Air Fuel Ratio
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2014-2020 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5 L GAS, 6 Cyl 3.5L | VQ35DD, VQ35DE
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Nissan Pathfinder Air Fuel Ratio Sensor
Part Number: 22693-1AA0A
$219.46 MSRP: $324.97
You Save: $105.51 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assy Air Fuel Ratio
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2007-2012 Nissan Pathfinder | LE, S, SE, SE Off-Road, SV, XE | 6 Cyl 4.0L, 8 Cyl 5.6L | VK56DE, VQ40DE
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Nissan Pathfinder Heated Oxygen Sensor
Part Number: 226A0-EA200
$198.98 MSRP: $294.63
You Save: $95.65 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Heated Oxygen Sensor,Rear; Oxygen Sensor, Rear Oxygen Sensor
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2012 Nissan Pathfinder | LE, S, SE, SE Off-Road, Silver Edition, SV, XE | 6 Cyl 4.0L | VQ40DE
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Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-9BF0B
$219.49 MSRP: $325.00
You Save: $105.51 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Heated Oxygen Sensor, Rear
- Manufacturer Note: MFG# 0ZA610-N
- Position: Rear Driver Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2014 Nissan Pathfinder | Platinum, SL, SV | 4 Cyl 2.5L | QR25DER
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Nissan Pathfinder Air Fuel Ratio Sensor Assembly
Part Number: 22693-ZX70A
$232.90 MSRP: $344.85
You Save: $111.95 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assy Air Fuel Ratio
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2010-2012 Nissan Pathfinder | LE, S, SE, Silver Edition, SV | 6 Cyl 4.0L | VQ40DE
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Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-EA210
$202.97 MSRP: $300.53
You Save: $97.56 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Heated Oxygen Sensor,Rear; Oxygen Sensor, Rear Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2012 Nissan Pathfinder | LE, S, SE, SE Off-Road, Silver Edition, SV, XE | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Pathfinder Heated Oxygen Sensor Rear
Part Number: 226A0-6CA0A
$81.53 MSRP: $109.33
You Save: $27.80 (26%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor, Rear; Lower Oxygen Sensor, Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2020 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5 L GAS
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Nissan Pathfinder Air Fuel Ratio Sensor
Part Number: 22693-1KT0A
$261.90 MSRP: $387.80
You Save: $125.90 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: 22693-1KT5A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2014 Nissan Pathfinder | Platinum, SL, SV | 4 Cyl 2.5L | QR25DER
View related parts
Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-3NT0A
$215.75 MSRP: $319.47
You Save: $103.72 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor,Rear
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2013-2015 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-8U300
$187.52 MSRP: $277.67
You Save: $90.15 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor,Rear; Oxygen Sensor, Rear Oxygen Sensor
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2007-2012 Nissan Pathfinder | LE, SE | 8 Cyl 5.6L | VK56DE
View related parts
Nissan Pathfinder Air Fuel Ratio Sensor
Part Number: 22693-ZE00A
$228.34 MSRP: $338.10
You Save: $109.76 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assy-Air Fuel Ratio
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2006-2008 Nissan Pathfinder | LE, S, SE, SE Off-Road, XE | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Pathfinder Heated Oxygen Sensor
Part Number: 226A0-7S001
$187.52 MSRP: $277.67
You Save: $90.15 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor,Rear; Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2007-2012 Nissan Pathfinder | LE, SE | 8 Cyl 5.6L | VK56DE
View related parts
Nissan Pathfinder Oxygen Sensor
Part Number: 22693-1MR0A
$239.29 MSRP: $354.32
You Save: $115.03 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assy Air Fuel Ratio
- Replaced by: 22693-3RC0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2013-2014 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-1HC0A
$221.55 MSRP: $328.05
You Save: $106.50 (33%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor,Rear
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2013-2015 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DE
View related parts
Nissan Pathfinder Heated Oxygen Sensor
Part Number: 226A0-BV81A
$236.35 MSRP: $349.97
You Save: $113.62 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor, Rear
- Replaced by: 226A0-BV81B
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2015-2019 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5L | VQ35DD, VQ35DE
View related parts
Nissan Pathfinder Sensor Assy Air Fuel Ratio
Part Number: 22693-6CA0C
$175.04 MSRP: $259.18
You Save: $84.14 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: 22693-6CA0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2020,2022-2025 Nissan Pathfinder | Platinum, Rock Creek, S, SL, SV | 6 Cyl 3.5 L GAS
View related parts
Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-6CC0B
$97.21 MSRP: $130.35
You Save: $33.14 (26%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor, Rear
- Position: Rear
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2020 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5 L GAS
View related parts
Nissan Pathfinder Rear Heated Oxygen Sensor
Part Number: 226A0-BV81B
$236.35 MSRP: $349.97
You Save: $113.62 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor, Rear
- Position: Driver Side
- Replaces: 226A0-BV81A, 226A0-BV80A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2020 Nissan Pathfinder | Platinum, S, SL, SV | 6 Cyl 3.5 L GAS
View related parts
Nissan Pathfinder Heated Oxygen Sensor
Part Number: 226A1-4W011
$225.65 MSRP: $334.12
You Save: $108.47 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heated Oxygen Sensor,Rear; Oxygen Sensor
- Position: Driver Side
- Replaces: 226A1-4W010
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2000-2003 Nissan Pathfinder | LE, SE, XE | 6 Cyl 3.5L | VQ35DE

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Nissan Pathfinder Oxygen Sensor

The Oxygen Sensor of Nissan Pathfinder monitors exhaust for unburned oxygen and sends a voltage signal to the engine computer to help in air fuel mixture. The Oxygen Sensor, which is constructed of threaded steel and has holes in it, contains a zirconium dioxide element with platinum electrodes. These electrodes compare the oxygen in the exhaust with that in the outside air. When the mixture is rich, the sensor generates a voltage of up to 0.9V. When the mixture is lean, the sensor generates a voltage of about 0.1V. The inbuilt heater rapidly heats the sensing tip to a temperature of 600°F, allowing prompt commencement of closed loop operation. All Nissan Pathfinders deploy at least two sensors, one before and one after the catalytic converter. V6 versions employ at least four so that each cylinder bank has an upstream and downstream unit. The computer relies on the cycling feedback from the upstream Oxygen Sensor. This feedback allows the computer to lengthen or shorten injector pulse width. The downstream Oxygen Sensor is applied to check converter efficiency. Aging, contamination, or failure of a Nissan Pathfinder Oxygen Sensor can slow response, raise emissions, and trigger trouble codes that light the check engine lamp, requiring replacement to restore Nissan Pathfinder performance.

If you need any OEM Nissan Pathfinder Oxygen Sensor, feel free to choose them out of our huge selection of genuine Nissan Pathfinder Oxygen Sensor. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. In addition, we offer quick shipping to have your parts delivered to your door step in a matter of days.

Nissan Pathfinder Oxygen Sensor Parts Questions & Experts Answers

Rear Heated Oxygen Sensor
226A0-4W001
Q: What is the purpose of the oxygen sensor in the exhaust system on Nissan Pathfinder?
A:
The oxygen sensor in the exhaust system reacts with the oxygen in the exhaust to produce a voltage output that varies depending on the oxygen content. This feedback signal is used by the PCM to determine the needed fuel injector pulse width and control the air/fuel ratio. The ideal ratio for emissions, fuel economy, and engine performance is 14.7 parts air to 1 part fuel. The post-converter oxygen sensor on this car is used for the catalyst monitor system and produces a slower fluctuating voltage signal. The PCM can detect oxygen sensor problems and set diagnostic trouble codes. To test the sensor, backprobe the signal wire terminal of the oxygen sensor connector and monitor the voltage. While pre-converter should switch actively between 0.1 and 0.9 volts, post-converter should also range from 0.1 to 0.9 volts but not switch actively . Check battery voltage supply and ground circuits to heater of oxygen sensor, check resistance of heater . In case an open circuit or excessive resistance is indicated then replace a faulty Oxygen Sensor . When replacing a sensor ensure that exhaust system has cooled properly follow proper handling procedures . Raise vehicle, disconnect electrical connector, unscrewed using a suitable wrench or socket, apply anti-seize compound at threads and tighten securely . Lower vehicle and reconnect electrical connector.