What is the procedure for replacing the O2 sensor on a 2001 Nissan Maxima?

Answer 1

How are you, My name is Matthew from Scottsdale, I too have a 2001 maxima and I love it. the service engine light came on a few weeks ago and I,m pretty sure it is the sensor. First off there are 3 of them. they look very easy to replace. If you pop the hood and look at the gap between the mainfold and the radiator you will see 3 wires one is blue, red, white. (if it is the same as my maxima) Each wire clips into this plastic holder (should be covered with electrical tape). The blue wire runs to the left into the mid part of the manifold about 8 inches from where it started. The other 2 (red and white) runs down the the bootm of the engine (yikes!!) But if you follow them down to the bottom of the car you will see that they are not really hard to get to. With a little bit of diligence and patients I think it is really possible. The one question I have is which sensor is the problem Blue White of Red? I work at Sears at night and I am going to ask if they can figure out which on it is and see if I can't replace it myself. No need to change a sensor if it isn't needed. But the question now is if it will still in fact shut off that Service engine soon light. Well lets take care of one problem at a time. I'm going to find out if they can't look at my car tomorrow. Until then safe driving fellow 2001 Maxima owner! Please if anyone has better suggestion please I'm all years.

Answer 2

if its the sensor found on the front of the exhaust, you will need a 22mil open ended spanner to undo. Disconect the plug and then attactch a new part. simple process.... if that's the right oxygen sensor.

Answer 3

You have 2 sensors. The pre-converter O2 senser is located in the exhaust manifod ahead of the catalytic converter. The post-converter O2 sensor is located in the exhaust pipe after the catalytic converter.

* Let the exhaust system cool. * Raise and secure the vehicle. * Disconnect the electrical connector from the sensor

* Using a suitable wrench or special oxygen sensor socket, unscrew the sensor from the exhaust manifold or exhaust pipe. * Use some anti-seize compound on the threads of the sensor so that you can easily change them in the future. * Install the sensor and tighten. * Reconnect the electrical connector for the sensor and lower the vehicle

Answer 4

have you try unscrewing it with an open end wrench? sometimes you may need a special tool. but its a farly simple job.