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New AFR Oxygen Sensor Upstream+Downstream O2 02 for 04-06 Nissan Maxima 3.5L X4

Price: $123.61
SKU: 130329
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New AFR Oxygen Sensor Upstream+Downstream O2 02 for 04-06 Nissan Maxima 3.5L X4


Technical Oxygen Sensor FAQ
The best way to determine the exact locations for your vehicle’s sensors is to consult a maintenance manual such as those put out by Haynes or Chilton. I am getting a CEL/MIL and a …… code. Do I need to replace my oxygen sensors?

Not necessarily. The oxygen sensor simply reports the data that it gathers. For example, if you are getting a lean mixture code, you may have a vacuum leak or a faulty fuel injector. Replacing the oxygen sensor will not fix this problem. You will just get the same code again. You can find more information about diagnostic codes for your oxygen sensors on this page.

 
How can I test my oxygen sensor?
A: The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation.
Use a 10-megaohm digital voltmeter. Hook up the voltmeter's red probe to the sensor's signal wire and the black probe to engine ground. (Use back probe method, DO NOT pierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes.

Do I need to replace all of my oxygen sensors at once?
It is best to replace your sensors in pairs. For example, if you replace the downstream left sensor, you should also replace the downstream right. However, on most vehicles produced since 1996, replacing one sensor (especially the front engine monitoring sensor) will cause the ECU to set a code for the other sensors.
This is because the new sensor switching activity is much faster than that of the older aged sensors. It is probable that on most vehicles, the code will be set within 30-60 days AFTER the first sensor replacement.

How do I locate specified sensor locations (B1S1, downstream left, etc.)?
Refer to the diagrams below.
Left and right sensor positions are found in reference to the rear of the engine (the side opposite of the belts).
Upstream (pre-cat) and downstream (post-cat) are found in reference to the catalytic converter


What is a California emissions sensor? How do I know if I need one?
A California emissions O2 sensor is meant for vehicles that are designed to meet California emission regulations. Such vehicles should have a sticker under the hood or on the driver’s door jamb that identify them.

Package included:
- 4*O2 Oxygen Sensor

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