- Monitors the air-to-fuel ratio within your engine
- Can become worn over time or damaged by a fluid leak
- Replacement by an Nissan professional is recommended
Your vehicle's combustion system depends on numerous sensors and gauges to maintain optimal conditions for performance. One of these mechanisms is the O2 sensor. Originally, these sensors were invented to help limit emissions, and are now standard in most modern vehicles. Depending on the Nissan model and year you own, you may have one or more of these in your engine.
Your Oxygen Sensor (Rear)s help measure the air-to-fuel ratio in your engine, helping your engine's internal computer regulate the mixture depending on whether your engine is running on too little oxygen (burning rich) or too much oxygen (burning lean). Having the incorrect ratio of air-to-fuel may negatively affect the combustion engine, resulting in poorer fuel efficiency and more emissions. That's why it's a good idea to have a new Nissan O2 sensor.
The Oxygen Sensor (Rear) produces electricity, and the amount of voltage it results in depends on what the exhaust system is producing. In layman's terms, the electricity generated by your Nissan O2 sensor will vary if the fuel-air mixture is off! When the system notices a change in voltage, your engine's internal computer makes adjustments to the fuel mixtures to keep your Nissan running as intended.
Your Nissan Oxygen Sensor (Rear) may need to be replaced after a period of time or usage. In some cases, you may need to replace it prematurely if your Nissan sensor is damaged by coolant or oil leaks, or other forms of contamination. Some telltale signs that indicate the need for a new Nissan sensor include: engine misfiring, rough idling, poor gas mileage, and a check engine light.
Since the majority of modern cars rely on multiple O2 sensors to support proper combustion, it can be challenging for an at-home mechanic to pinpoint which one requires replacement! Occasionally, the repair involves at a specialized scanner and inspecting the undercarriage by jacking up the vehicle. That's why many Nissan owners opt for getting Oxygen Sensor (Rear) repairs at their local Nissan service center.
Is one or more of your Nissan Oxygen Sensor (Rear)s misfiring? Order an authentic Oxygen Sensor (Rear) for your Nissan Armada, Nissan Pathfinder, or Nissan Titan for precise fitment and performance. Check the What This Fits tab for more details.
HEATED OXYGEN SENSOR
Fits Titan (2004 - 2015)