My 2002 nissan xterra keeps dying at low idle, I had auto zone trouble shoot this and they said it was my knock sensor. Could this part fix my issue?

po328 is a knock sensor code ,0174 &0420 are emissions codes. Possibly a faulty knock sensor throwing out the timing, It may just have a vacuum leak causing it to run lean, affecting the timing causing knock sensor code, Scan for live readings, ck knock sensor, o2 sensors, A/F ratio & converter,clogged injector ect. Good luck
y

-There are couple things cause that.
-Check spark plug wire, spark plug, compression, fuel pressure and
injectors.

Good luck

Mai

sounds like a bad rod bearing. if auto trans put in drive hold brake firmly with left foot gently push on gas pedal with right foot if knocking increases with engine rpms bad rod bearing time for engine rebuild

Trouble Code: P0328

Knock Sensor Circuit High Input (Bank 1)

Possible Causes:


Knock sensor signal circuit is open.Knock sensor signal circuit is shorted to VREF or system power.Knock sensor is damaged or has failed.Trouble Code: P0420

Catalyst Efficiency Below Normal (Bank 1)

Possible Causes:


Air leaks at the exhaust manifold or in the exhaust pipes.Catalytic converter is damaged, contaminated or has failed.Front HO2S or rear HO2S is contaminated with fuel or moisture.Front HO2S and/or the rear HO2S is loose in the mounting hole.Front HO2S older (aged) than the rear HO2S (HO2S is lazy).

I had a 2002 nissan xterra in my garage with the same problem. they all have very common distributor issue on them. replace the distributor with new one

It sounds like the diodes in your altenator are shot. If you can get it to your local parts store, like Advanced Autoparts or Auto Zone, they will test your charging system for free. That will tell you if it's your battery, alenator or both. Hope this helps.

The knock sensor is on the back side of the engine bolted onto the block. It looks like this

ok if it is getting spark at spark plugs that rules out ignition, let go to fuel, needs to check fuel pressure and also injector pulsation, if no pulsation fuel will not get into cylinder's, also a knock sensor will not keep an engine from starting, it controls ignition timing once engine is running.

Your knock sensor is located undernesth the air intake manifold on top of the engine block. This goes for 2000-2004 xterra V6 3.3L models.

It's the valley of the engine underneath the intake manifold. It's about an $800 job because the top of the engine has to come off. However, unless you have a supercharged xterra it shouldn't effect performance. Also, the knock sensor will not trip the check engine light, as it does not indicate a primary problem, so if your light is on you should have another code that should be fixed first.