How many O2 sensors does a 2004 Xterra have?
4 Oxygen Sensor
4 Oxygen Sensor for 2004 Nissan Frontier Xterra 3.3L Upstream + Downstream.
Where is the oxygen sensor on a Nissan Altima?
This tutorial will help you to test the upstream oxygen sensor on your 2.4L Nissan Altima, Xterra or Frontier and/or troubleshoot OBD II Codes P0131, P0133. The upstream oxygen sensor is the one before the catalytic converter and is also known as O2S11. Important Suggestions And Tips. Oxygen Sensor Basics. Oxygen Sensor Test 1.
Where is the upstream oxygen sensor on a car?
The upstream oxygen sensor is located before the catalytic converter. This measures the level of pollutants coming directly from the engine. It also senses any raw, unburned fuel coming from the combustion chambers. The downstream oxygen sensor is located directly after the catalytic converter.
Where is the downstream oxygen sensor located in a catalytic converter?
The downstream oxygen sensor is located directly after the catalytic converter. This sensor measures the pollutants making it through the converter and out of the tailpipe. The data from this sensor is compared to that of the upstream sensor.
How does the O2 sensor work in a car?
And so, it’s the job of the O2 Sensor to measure just how Rich or Lean the exhaust is and report it back to the PCM. If, after the engine is running and the PCM creates a Rich Condition, the oxygen sensor will react by producing a voltage above 0.500 Volts.
Can a Nissan Altima oxygen sensor go bad?
In this video I replace the upstream oxygen sensor replacement on my 1999 Nissan Altima. When oxygen sensors go bad it can cause the engine to run bad or die. Sometimes it’s very hard to find that the oxygen sensor is at fault because it might not log any faults for that.
Where are the O2 sensors located upstream or downstream?
Upstream oxygen sensors are located in between the engine and the catalytic converter Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter Locate your vehicle’s firing order diagram The bank that contains cylinder one is bank one
Where are the O2 sensors in the catalytic converter?
Upstream oxygen sensors are located in between the engine and the catalytic converter Downstream oxygen sensors are located in the catalytic converter or farther away from the engine than the catalytic converter
What happens when the oxygen sensor goes bad?
When oxygen sensors go bad it can cause the engine to run bad or die. Sometimes it’s very hard to find that the oxygen sensor is at fault because it might not log any faults for that. I only change out the upstream sensor, but they recommend that you change out the downstream oxygen sensor at the same time. Loading…