How difficult is it to replace a knock sensor?

[Casutherland42]

I believe my knock sensor is bad or is going bad, because i have gotten the code to come on a few times now (on and off). How difficult is it to replace the knock sensor on your own, and what tools are required?

Are there any guides or videos online on how to do it?

Where is a good place to purchase one.

By the way, my car is a 2000 nissan pathfinder.

[Towncivilian]

It's under the upper and lower intake manifolds. It's a pain in the a** to get to. Relocation is an option, though.

Is P0325 the only code you're getting? Knock sensor code isn't always caused by a faulty knock sensor. Try following the diagnostic procedure described on page EC-330 of the FSM.

[Casutherland42]

Well that was the code that I was getting. I replaced the oxygen sensors and the code went away. But I have seen it back once or twice sense. It just never stays on, so I am not sure what the issue is.