P0325 Nissan Code - Knock Sensor Circuit Malfunction

Would bad knock sensor stop vic from being able to drive

No, a bad sensor will not stop the vehicle from driving. Even if the sensor is broken or disconnected, the vehicle should still drive.

Would a bad knock sensor cause a vehicle to not start at all?

No, a bad knock sensor will not cause the engine not to start.

Would a bad knock sensor po328 cause the fuel pump to only put out 30psi?

No, the knock sensor changes the timing, but not the fuel pressure.

Would a bad knock sensor cause an automatic transmission 96 Altima to quit while stopped in traffic when the AC compressor comes on? The car is also bursting coolant hoses but this is probably unrelated.

Definitely not. The engine is overheating. Fix the overheating problem and that will more than like fix the other problems.

would a bad knock sensor cause the the engine to have a eratic idle ( up and down ) from 500 rpm to 1250 rpm run smooth for a bit then chug runs great above 2500 rpm's and better when the  engine is warm.

No, a bad knock sensor will not caused an erratic idle.

could a bad knock sensor throw a ck engine light on?

Not on Nissan vehicles

p0325*

P0325 is for the knock sensor.

i have a xterra 2001 didnt pass emition because of code 300 and 325 what can it be ?

Your vehicle will pass the smog with the P0325 code, but it will failed for the P0300 problem. There are many things that can cause the P0300 code. More information about the P0300 code: 
https://www.autocodes.com/p03...

My 98 pathfinder shows a p0325 knock sensor code. After the truck warms up and while driving the rpms jump up and down. Could that be because the knock sensor? If not what could cause it?

No, the knock sensor will not cause that problem. You could start by replacing the spark plugs and adjusting the base idle.

My Nissan maxima is showing PO325, something wrong with knock sensor, could there also be a problem with the o2 sensor? since my car will not start without me pressing the gas pedal?

If you only getting the P0325 code, then more than likely nothing is wrong with the O2 sensor, just a bad knock sensor. Also, the knock sensor will not cause the no start problem.

Since vehicle state inspection on 2001 Nissan Frontier, now have "service engine soon" light. Advanced auto parts said code po455 and po325.

You probably have to replaced the knock sensor.

P0325 NISSAN - Knock Sensor Circuit Malfunction

For the P0455 code you could start by inspecting the gas cap.

P0455 INFINITI - EVAP Control System Gross Leak DetectedRead more: https://www.autocodes.com/p04...

1999 Altima, replacedthe plugs and wires, cap and rotor. (It's always possible I could have a cracked plug) Still runs rough, Occasional engine light. Checked the code and it shows P0325, yet the threads below sound like none of these symptoms would be caused by faulty knock sensor?

Correct, the knock sensor will not cause an engine performance problem. You could have a problem with the injectors.

my 2000 pathfinder does the same as
Benmfstucker one wen it warms up rpms go up and down i have changed the knock sensor and didnt work, still the same , what could it be??

You could start by cleaning the thorttle body plate and adjust the base idle. The knock sensor will not cause to the RPM to go up.

hey i got nissan xterra 2000 and say PO325 i know is knock sensor but want im in the red light the truck turns off in the light should i change the knock senosr?

The knock sensor it's no way the reason the engine stall.

and u dont got any idea for that reason ?

There are lots of thing that can cause the engine to stall. Spark plugs, distributor, bad gas, injectors, etc. Without codes it's difficult to know. You could start by replacing the spark plugs, oil change and adjust the base idle.

I have code P0325 and P0420. I haven't noticed anything out of the ordinary with car as far losing engine power. What I have noticed is that the fuel gauge on the dashboard stays F (full) and I've driven the car long enough for the gas gauge to come down. Should I replace the knock sensor?

The knock sensor has nothing to do with the fuel gauge. For the fuel gauge problem you may have to replaced the fuel sender unit inside the fuel tank and for the P0420 code you may have to replaced the catalytic converter.

On my 2001 Nissan Xterra I got a p0325 and p1126 reading after topping off the coolant and replacing the air filter. Nothing unusual about the motor that ive noticed.

You probably have to replaced the thermostat as well.

P1126 NISSAN - Thermostat Function

Reade more: https://www.autocodes.com/p11...

1999 nissan altima gxe. is showing p0325,p0440,p1490,p1448. where should i start the knock sensor, or the other codes. any help would help.

You probably have to replaced the sensor to fix the P0325 code, but this code will not trigger the engine light, the other codes are the ones that are triggering the light.

I am thinking about buying a 2001 nissan exterra that has a P0325 code. The engine light intermittently comes on and only shows this code, but it is not known how long the code problem has been affecting the engine. Could a bad knock sensor cause any long term damage to or shorten the life of an engine? Also, what is ballpark range of prices for fixing a knock sensor?

No sensor will not cause any long term problems, but if the engine is pinging (due to low octane gas) the engine will not be able to retard the timing and may cause a knocking noise.

Now, the knock sensor will NOT cause the engine light to come ON, there must be another problem with the engine. The code will be there but the engine light will not come ON.

2000 nissan exterra that sometimes turn on a light ABS, normally turn the light on when is staring tu run the motor, as soon as turn off the motor the light goes too,what should do the problem?

The ABS system has nothing to do with the knock sensor code. You need to check for ABS codes. Not all the OBDII scanners can read ABS code you have to have your local shop check for ABS codes.

2000 nissan quest code p0325 but no engine light on. I have changed spark plugs, wires, did seafoam in fuel to clean out, replaced distributor with cap & rotor, oil change, fuel and oil filters done. This car kicks mainly when idling but has started while driving now as well, starts sputtering and feels like its going to shut off. What could be the problem? Last option the knock sensor???

P0325 code means that there is a problem with the Knock Sensor. A faulty knock sensor will not trigger the engine light, it's normal.
Why was all the other parts replaced if the code was for the knock sensor? replacing the Knock sensor will fix the problem.

lazy first mechanic never put computer on car to see if there were any codes...no light no reason to check i guess, so he did all that work hoping to fix prob. Now after driving it more today the code P1336 came up with the P0325. Is it still the Knock sensor or is it both the crank and knock? Maybe an electrical? can both go out at same time?

Both can go out at the same time. In my opinion you should just ignore the P0325 code for now, you may not even feel any difference with the new sensor anyways. Now, for the P1336 code the problem it's probably the Crankshaft Position Sensor and if the connector is OK (is not loose or damage) then replacing the sensor should take care of the code.

I will have my husband try this and let you know....thank you so much for answering so quickly!

Replaced knock sensor and it is still doing the same thing, kicking and the code is on again P0325.... what can it be? We are really getting stressed out and now out of cost of sensor and 9 hours labor :(

Did you use a factory knock sensor? if the sensor is OK, then you need to check the wires from the sensor to the Engine Control Module (ECM). As I mention before, you will notice any difference with the engine performance after you fix the knock sensor problem and the knock sensor will NOT trigger the engine light. Most people don't fix the knock sensor code.

i hav dun alls the same things. i found that the knock sensr wire was not connected? so reconnected it. quest/ started and ran, but code sez it is a failure?? hope u got u r fixed in the past 25+ days? mine starts and runs,? unone sas to how far or for how long? lol!

cranksensr is UNDER THE exhaust manifold! repeat! UNDER! an u can bearli see the damn thing! DO NOT !DO NOT luz the 10mm nut that holds the cranksensr in place, there is no replacement!!

ive had vave cover replacement and plugs coil etc but now po325 comes up did the mechanic cause this because it wasnt there before

What model year is your Nissan? It's unlikely, the knock sensor is not near the the spark plugs and valve covers on most Nissan models. The Knock sensor it is a very common problem.

check the distributor! make sure all is well inside. check wires!

Just relaced the spark plugs and did an oil change now it is making a knocking noise. Throws code po325. What could it be?

This is a 1999 Nissan altima. Please help?

My son was thinking it might be bad gas? I did just fill up the tank when the noise started? Not sure how safe it would be to drain the tank? If that was done how long would it take for the noise to stop? If that is even the problem

My 2000 nissan altima starts to shake and will stop to accelerate any time i move at high speed for about 3 minutes without applying the brakes. Whats the problem please

There are many things that can cause that problem, e.g. ignition coil, head gasket, but the knock sensor will definitely not cause that problem.

could it be the crankshaft position sensor or the ignition coil because it displays the crankshaft position sensor code each time i scan it

More than likely the problem is the ignition coil. It's a very common problem with Nissan vehicles.

My 2000 QX4 is making a roaring sound. The dealer said water pump and replaced it. It idles quietly now but makes roaring sound still when accelerating. I checked and have P0325 code now too.

The knock sensor will not cause any noise or engine performance problems. The noise you heard it's probably from air trap in the cooling system. The dealer probably didn't bleed the cooling system enough to get all the air out. You should take it back to the dealer.

looking at purchasing a 1997 pathfinder. Engine light is on and codes P0325 & P1441 come up. From what I have read in past discussion P0325 - Knock Sensor will not cause check engine light to come on. What will P1441 do long term to engine?

The P1441 is for the EVAP system ( https://www.autocodes.com/p14... ). The EVAP system should not affect the engine performance but your Pathfinder will fail the smog check.

Did u ever figure this problem outt

I had a problem with this p0325 code on a 1995 Altima. sputtering , engine light on. I put a new oxygen sensor on and it didn't do a thing. My wife suggested new spark plugs. I said why not, not too expensive. So I put new plugs and wires, turned the engine light off and it runs smooth. maybe a bad plug sent a false reading. Anyway so far it is running fine.

I have a 99 nissan frontier v6 and the TCM and KNOCK sensor trouble code comes up. The truck at idle or load will loose significant power. Not sluggish but immediately. Is it really the knock or will something else cause it.

Looking to buy 1997 Nissan Pathfinder from private seller. The only code that is showing is P0325 (knock sensor). Will it pass emissions at local dealership so I can register vehicle? Thank you

Yes. The P0325 Knock Sensor code will not cause your Pathfinder to fail the emissions test.

That knock sensor is fairly cheap and easy to replace and code will go away

The knock sensor will cause the engine to lose power from a take off, but not at idle. Sometimes you may not even feel the power decrease.

So what is the major down side to not fixing knocking sensor? Short term or long term. I ask because I understand part and service repair can be pricey. Thank you for your time....

Thanks for the reply. But how about the cranck shaft position sensor? Will that cause the loss of significant power or "kicking" type symptoms? As a side note. The truck two weeks ago started now doesn't. The hand scanner showsc a p0340 code now and no p0325? Thanks for any info you could give.

On a 4 cylinder yes, but the 6 is under the intake manifold. Don't want to spend 10 hours if unnecessary. Also, I hooked up the hand scanner and now, maybe cause it will not sart now, the code p0340 crankshaft position sensor appears. Will the knock sensor only show when engine is running?

Yes. The crankshaft position will cause the engine too loose power and even stall, at idle or while driving.

So what is the major down side to not fixing knocking sensor? Short term or long term. I ask because I understand part and service repair can be pricey. Thank you for your time....

how about in Ontario Canada will it pass e-test?

Unfortunately I don't know about Canada.

No downside, other than you may experience some loss of power during take off.

I have the knock sensor and O2 sensor codes with a check engine light. Running with high octane gas for about 30 miles went fine but it's back. This is a 2004 Xterra with around 94200 miles. What should I do here?

You have to start by chenging the O2 sensor

I have a P0335 and a P0325 on a nissan sylphy, the car cant start. at one point the machine detected the airflow sensor but a day later its now the p0335 and p0325. I have replaced the crank sensor twice but the problem is still on. what could be cause please help am tired of pumpimg out the money

Can both sensors go out at the same time on Nissan Altima 2000 gxe?

Also, do codes have to be reprogrammed when those 2 sensors are replaced? Check engine light is on. Please Help!!

Yes, when the vehciels have 2 sensor, but your 2000 Altima only have one sensor.

No reprogram is need it. You should double check the code, the knock sensor will not trigger the engine light. It will set the code, but the engine light should not come ON just for the knock sensor.

My Nissan pathfinder shows (service engine soon) and I got it scanned. The code p0325 showed. Will this affect anything inside the vehicle if I don't fix it on time or did not fix it at all? Need ur quick response please. Thanks

OBDII Tech....funny you keep saying the knock sensor will not trigger the check engine light but mine is on and the only code its displaying is for the knock sensor. My 99 Altima idles rough but drives smooth. Would this be the cause of a faulty knock sensor? Thanks

No. The knock sensor will not cause a rough idle. I'm 100% sure that the knock sensor will not trigger the engine light, it will set a code but the light. Rough idle could be caused by different items, spark plugs, fuel injectors, ignition coils, egr, and more. Try checking the code with a different scanner.

You may feel a bit sluggish during take off, but other than that the knock sensor will not cause any other problems.

I have a 97 nissan altima. It has 2 codes that are doubling. The codes P1400 and P0325.. We've changed the EGR valve and replaced the EGR Vacuum tube. We're not sure what else to do. We are planning on replacing the flex pipe. Could that be making the 2 codes pop up? Our flex pipe is completely blown out.

The P0325 code will not trigger the light or give you any noticible problem, you should concentrate on the P1400 code.
The P1400 code ( http://www.autocodes.com/p1... ) is for the "EGRC-SOLENOID valve", you probably have to replace the solenoid valve to fix the problem.

I already had someone check the solenoid to make sure it was working and it is. We replaced the flex pipe on the exhaust today to see if it would help fix the problem, at this time it hasnt but the car runs much better and it definitely needed to be replaced. Is the knock sensor going to keep my car from passing inspection? I have the part but if i dont have to replace it, i can return it.

I hope that fix the problem.
Your Altima should pass the smog check even with the knock sensor code.

Okay, thank you.

Curious as to what would make my car shudder hard in the rpms during driving and wants to stall sometimes while driving but mostly at idle only code it pulls is knock sensor, have replaced fuel pump, fuel filter, distributor cap, spark plugs, spark plug wires , cleaned the throttle body but nothing is helping.. 97 Nissan Altima

What model and year is your Nissan? have you done a compression test?

1997 Altima and negative on the compression test bc I wasn't sure what I SHOULD do .. so a compression test is recommended and if it fails the test, what would be the cause of the failure factoring in all the symptoms?

Unfortunately a blown head gasket, which is somewhat common for the 97 Altima.

Sorry for the late reply, followed up w a compression test and its good.. replaced valve cover gasket, fuel pressure regulator bc it was exhibiting signs of a bad regulator (blackened spark plug, smell of gas in oil, along w the stuttering and stalling out).. just finished up w that and took it for a test and it's still losing stuttering intermittently and losing power after dropping rpms.. drop it in neutral and give it gas and it'll start back up. Don't know what else to look at :/

how can I testing knock sensor if is working how can i no pls help me

What model and year is your Nissan? If you get the code, then the knock sensor is probably not working. Very common problem with Nissan

For you 1997 Pathfinder, you need to disconnect the knock sensor and with measure the resistance of the sensor. See attached image:

thanks Auto cade

thanks

Help me with my car

Replace the Knock Sensor and if the problem continues have a mechanic help you diagnose the problem.

Check engine light came on on my 1995 nissan altima 2.4 gxe car still ran great now 2 months later all of a sudden its missing bad i put new plugs, wires, distributer and cfoam and car still runs like crap cods show po325 knock sensor and po300 random misires plz help what could it be?

The knock sensor wont cause any noticeable engine performance problems, so forget about the knock sensor and try to diagnose the cylinder misfire. Since you have already replaced plugs, wires and distributor, probably the other 2 possibility is a fuel problem (leaking fuel injector or bad fuel pump) or low compression. The next step is to perform a compression and inspect the spark plugs. Check if the plugs are dry or wet.

I did a compression check all is a lil over 150 so thats good sparkplugs are new a dry

I have a 2000 Nissan Quest I notice the van was shaking and I feel like it was going to turn off when is at a stop light or just doing a stop so I check when I gat home and I notice the o2 sensor wire was hanging it broke down I check to see if there was any codes and it show the p0325 would only replacing my 02 sensor would be enough or do I have to replace the knock sensor as well?

You may have bad fuel injectors. Any other codes? Finding the bad fuel injector can be a bit difficult. You could measuring the injectors, should be around 14 ohm

The knock sensor or the O2 sensor wont cause any noticeable engine performance problems, there must be something else cause the problem. Are any other code?

No that's the only code the pop up and I just notice the o2 sensor that broke down and I just replace the oil and spark plugs like 2 months ago and we do hardly even drive the van

Could be just bad gas or spark plugs, but don't replace the knock or O2 sensor for that problem,

Ok thanks I would check the spark plugs see if any are bad but thank you hopefully it works

I have 98 Maxima and my engine light is on. The car sputters when idle and shows signs of loss of power. The car feels as if it's going to shut off at any moment. I had diagnostic check done on the car and two codes came up: P0325 and P0440. Do you know what the issue could be?

Neither of the two codes components (P0325=Knock sensor, P0440=Evap System) will cause the engine to sputter or loss of power. You should start with the basics. Check spark plugs condition, air filter, oil condition and level, fuel level. There are many thing that could cause those symptoms, probably the most commons for your 98 Maxima are ignition coils and fuel injectors.

I have an 04 xterra. Just got knock sensor replaced for 700 bucks. The code came back after driving ten mes. What should I check next?

Did you use a factory sensor? are there any other engine problems (engine noise, low engine performance) ? If all it's OK, and you got a new sensor, then then problem is the wire from the sensor to the Engine Control Module (ECM)

Yes they used a sensor from nissan. There is a very small vacuum leak but I don't know of anything else wrong. I read from other Ppl to replace distributor cap. Should I try looking at that? It will occasionally idle rough , seem's to idle worse after the repair. Thanks

The distributor cap and rotor are part of the regular maintenance, it wouldn't hurt to start with that

2000 Nissan Altima GXE. Got "P0325", says knock sensor 1, Circuit Bank 1 or single sensor...
Car runs crappy doesn't Get it like it should.. Long story short, ( O2 Oxygen Sensor ). Located Front of Engine look at radiator cap and look slightly down.. BAM!! Replaced the Oxygen Sensor. And it runs like a champ.. @ (217004)miles.. Original motor.. Not a bad vehicle. But it has some RECURRING issues that's factory problem. Cheap fixes. REMEMBER! Tune Ups And Clean fluids are a cars best friend. MAS sensor and throttle body could use a nice cleaning every so often to increase performance..

Try cleaning the throttle body and check your vacuum lines for leaks. Also check throttle position sensor.
The Nissan Altima GXE, isn't a horrible car but it has a ton or frustrating recurring problems. Look underneath your car on the gas tank side check the 3 hoses coming from tank if they are cracked looking Id replace them asap. That solved a ton of hesitant problems for me recently..
Need more info I'll take pics of need just let me know..

I have a 1996 Nissan altima and the p0325 codes keeps coming out and
it's keeping my car from passing smog. I replaced the knock sensor and
the front O2 sensor, but it keeps reading the code. What else could it
be?

Your Altima should be able to pass smog even with the knock sensor code. The knock sensor code should not trigger the engine light either. If you replaced the knock sensor, but the codes comes back, then there is a problem with the wire from the sensor to the Engine Control Module (ECM)

Is it possible the knock sensor would cause my egr and catylyst to "not be ready" for smog? Have no engine light but this code keeps popping up kind of randomly, wanted to see what you guys thought.

No, some years are very difficult to get ready. What model and year is your Nissan?

1996 nissan 200sx se-r (2.0l Sr20de)

Unfortunately my only suggestion is to keep driving it, street and highway. Here is the driving pattern from the factory service manual, I hope it helps.

Thank you for that mate, I have the pattern from all data and they seem a bit different (well this one is confusing af ) but I'm going to keep trying the drive pattern maybe replace the ecu I read on yahoo answers (not the best I know) that those ecu's get stuck and you have to buy a new one. We will see what happens thanks for the input I do appreciate it a lot.

Just had this issue with my 2000 Xterra; If the motor dies you will get a code and eng light for ignition fault. I had to replace distributor as a electronic component went out. The part that went out was basically giving a false readout and cost about $18.00 but I got brand new distributor with lifetime warranty off e-bay for less that $60.00 took two days to arrive and seeing how this year car has a lot of issues with this part Lifetime warranty is best option then you can buy part for old one to use as a back up should you need it in future.

Will a faulty knock sensor cause the car battery to drain?

Definitely not. The knock sensor has nothing to do with the charging system.

I have a 2006 nissan altima. When I drive the car during summers in the afternoon when the outside temperature is very high. The engine turns off automatically. It happens only in slow speed at low rpm. The engine heat is normal. Sometimes when i leave the car at idling the engine turns off. I have changed fuel pump, crank and cam sensors, there was fault of pwr steering sensor, I replaced that also. Still its happning again.

Try cleaning the throttle body and adjusting the idle. It's possible that the idle it's too low causing the engine to die.

Instructions to idle relearn: http://nissanhelp.com/diy/a...

https://www.youtube.com/wat...

I'm having the same problem for a Nissan maxima 96 have you heard anything back? I was told changing the knock sensor would be my first concern

No, the knock sensor will no cause any noticeable engine performance problems. Do not replace the knock sensor if the engine is stalling.

some aftermarket knock sensors do NOT have a shunt resistor. Per Nissan specs, there should be around 500K -620K ohm resistance Pin2 to ground (or the metal mount base of the KS).

The KS itself may otherwise be fully functional in generating an AC voltage due to knock.

Why is the resistance critical? Because when the 5V reference voltage is supplied by the ECCS, this drops the voltage to around 2-3 V (voltage bias). If no drop then the ECCS considers the KS or harness faulty.

Many NIssans do not display a dash CEL for this fault but will run poorly espec when hot.

How to fool the ECS when a non-shunted KS is installed? Bridge the upper harness pairs (back probe) with a 560K ohm metal film resistor (costs a few cents from any electronics shop). This will drop the voltage from around 5V to the required 2-3V range (per manual EC240).

Thank you for the information!!!