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2000 xterra changed the knock sensor and now putting up a 505 code

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CODE PO505 - IDLE SPEED CONTROL SYSTEM MALFUNCTION.SOUND LIKE IDLE SPEED CONTROL ELECTRICAL CONNECTOR IS DISCONNECTED OR HAS FAILED.

Posted on Oct 13, 2010

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I have a PO code 505 on my 2000 Nissan Xterra and want to know what is causing that read out.


Alldata says
IACV-AAC valve. Don't mess around with this issue. If it shorts out it WILL take out the ECU.
Replace it as soon as possible if it's bad. You may have to pay for an Idle Air Relearn as well.

Feb 24, 2016 | Nissan Cars & Trucks

1 Answer

I have a 2000 Nissan Xterra with 2 error codes: PO325 and PO303. What needs to be repaired/replaced?


P0325 knock sensor 1 circuit malfunction bank 1 or 1 sensor, the knock sensor should be check/replaced. You can buy Haynes Repair Manuals at Pepboys that will walk you throught the process step by step.
P0303 is a cylinder misfire in cylinder 3 which may mean it could either be the spark plug, coil or the injector.

May 03, 2011 | 2001 Nissan Xterra

1 Answer

Knock sensor 2000 nissan xterra V6, location of sensor? how to change knock sensor?


Hello the sensor is located under your intake manifold you will need to remove the intake manifold to gain access to it here is photos of what and where your looking for thisregeetone_0.pngregeetone_21.jpg

Jan 23, 2011 | 2000 Nissan Xterra

1 Answer

2000 xterra v6 when it warms up it starts to miss badly, sputter and die. When it cools off it runs fine. I get a knock sensor (p0325) code on th ecomputer.


well i wouldnt place any emphasis on a generic code like this ,they dont always read correct especially on europeon market vehicles ,My first thought is the autochoke temperature sensor ,so when its cold it runs but when it warms up its running rich ,or a O2 sensor heater is playing up

P0325....Knock Sensor 1 Circuit (Bank 1 or Single Sensor)

knock sensor ??? dont think this is refering to the airbag but more like a sensor to `prevent pre detonation of fuel ,check the heater circuits on the O2 sensors ,their the two wires the same colour ,disconnect the plug and see if you have continuity across these two wires ,their are two sensors on this year one before and one after the cat ,not sure what is bank one though so check all four ,cant find this vehicle in my alldata books ,diesel yes i have a customer X trail but V6 petrol i have never seen

Jan 07, 2011 | 2000 Nissan Xterra

1 Answer

I have a 2000 nissan xterra my heat dont warm up i change my thermo stat if i get my heater core flush what are my chances of it working what are the major problem with the 2000 nissan xterra i done...


forget all the above items you mentiond,the heater metrick/core should be ok if you put a cooler flush through the system,im looking at the thermo switch mounted on the top of the water system it will have two wires on it and tells the engine when to let hot water through the core,also if its not working the engine will not perform great so try this and forget about new spark plugs/wires/coil pack ,as these are nothing to do with heating.adrian,,,

Dec 31, 2010 | 2000 Nissan Xterra

1 Answer

Where is the knock sensor for the 04 nissan xterra located?


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.

Nov 05, 2009 | 2002 Nissan Xterra

2 Answers

2000 nissan xterra knock senor and plug 5


Have you changed all the plugs to platinum and wires? My xterra was doing that and I changed all of them and now it runs great. Also, I changed the distribitor cap and rotor button.

Jun 10, 2009 | 2000 Nissan Xterra

1 Answer

2000 Nissan Xterra Service Engine soon indicator is always on


The knock sensor is not a huge deal to replace and will not turn on the light. It should be dont though.

The crankshaft sensor is located directly between the engine and transmission. It is dead center at the bottom.

May 17, 2009 | 2000 Nissan Xterra

4 Answers

Nissan xterra knock sensor


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.

Nov 05, 2008 | 2002 Nissan Xterra

2 Answers

Knock sensor


You have to take the entire intake manifold off upper and lower. you will find it on the main block after you take the lower manifold off.

Jun 17, 2008 | 2000 Nissan Xterra

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