Engine Code P0325 - Knock Sensor Failure - Nissan Forum
A32 1995-1999 Chassis 1995-1999 Maxima

Reply
 
LinkBack Thread Tools Display Modes
#1 Old Jul 20th, 2005, 12:22 PM
NissanForums Newbie
 
Join Date: Jul 2005
Posts: 7
Engine Code P0325 - Knock Sensor Failure

I have a 1995 Maxima GXE that has the "check engine" light on. I had a diagnostic run and the code came back P0325 - Knock Sensor Failure. The estimate for repair is $630 (including the $95 diagnostic charge).

The light came on over 5 weeks ago. Before I could get it in to the shop to have it looked at, the entire electrical system shut down while driving. Fortunately, I was able to pull off the road and it (the system) recharged enough to get me to Sears Auto Center. I wound up having both the battery and alternator replaced by Sears (the battery was still under warranty, so that was free.) The cost of repairs was over $400.

When I got the car back, the check engine light stayed off for a week. Now that its back on, I am looking at another $600 for repairs.

What is going on with this car? It has only 75,000 miles on it. What will happen if I don't have this repaired right away?

I appreciate any help and insight!!!
Sponsored Links
Advertisement
 
#2 Old Jul 20th, 2005, 01:43 PM
Nissan Enthusiast
 
Join Date: Sep 2004
Location: New York
Posts: 110
Are there any other codes. The knock sensor code does not throw a check engine light.
You might have other things wrong with your car.
As for the knock sensor, change it yourself. The part cost about $100.
Here are a couple of sites that show how to change the knock sensor
http://www.skippynet.com/maxima/knocksensor.htm http://www.motorvate.ca/mvp.php/507
#3 Old Jul 20th, 2005, 08:13 PM
NissanForums Newbie
 
Join Date: Jul 2005
Posts: 7
Spark Plugs?

Is it possible the spark plugs have gone bad? Another shop that looked at it said they thought the engine needed a tune-up and replace the plugs, wires, fuel filter, etc.

And, no....there were no other codes provided as coming up on the diagnostic.


Quote:
Originally Posted by MaxQuest
Are there any other codes. The knock sensor code does not throw a check engine light.
You might have other things wrong with your car.
As for the knock sensor, change it yourself. The part cost about $100.
Here are a couple of sites that show how to change the knock sensor
http://www.skippynet.com/maxima/knocksensor.htm http://www.motorvate.ca/mvp.php/507

Last edited by bbpatt; Jul 20th, 2005 at 08:15 PM. Reason: updated
#4 Old Jul 21st, 2005, 08:39 AM
Nissan Enthusiast
 
Join Date: Sep 2004
Location: New York
Posts: 110
Quote:
Originally Posted by bbpatt
Is it possible the spark plugs have gone bad? Another shop that looked at it said they thought the engine needed a tune-up and replace the plugs, wires, fuel filter, etc.

And, no....there were no other codes provided as coming up on the diagnostic.

What wire did they replace? Your car does not have spark plug wires to replace. If your check engine light is on then you should have more then the Knock sensor code. A bad knock sensor does not trigger the light, it just stores the code on the ECU.
#5 Old Jul 22nd, 2005, 12:41 AM
Dame tu cola!
 
DRUNKHORSE's Avatar
 
Join Date: Mar 2005
Location: Illinois
Posts: 336
if ur whole electrical system shut down on u that only means that its ur alternator usually, and since u had it replaced, i dont think u have to worry much about the knock code. if the car seems fine drive it around another week or 2. maybe later the car will give off a different code that usually makes the knock sensor code come up.

Sobre un urinario decia:Un consejo de amigo,un consejo de hermano,que nunca tengas en el culo,lo que ahora tienes en la mano.
#6 Old Jul 24th, 2005, 10:20 PM
NissanForums Newbie
 
Join Date: Jul 2005
Posts: 7
Any harm driving it?

With the knock sensor code showing through the diagnostic, and from what I am reading in these posts, the engine light is likely another separate problem, is it safe to continue driving as is? Is it okay to drive with a bad knock sensor?

The car appears to run fine (as far as I can tell).....it has been over two weeks with the check engine light on.

The engine light, according to the owners manual, may be emissions related. Does anyone have any experience with emissions sensors or other concerns when this light comes on?

I appreciate all your help!!!
#7 Old Jul 25th, 2005, 06:17 AM
Dame tu cola!
 
DRUNKHORSE's Avatar
 
Join Date: Mar 2005
Location: Illinois
Posts: 336
ok, if i were u, I would disconnect the battery/ or erase the codes. personally i would just disconnect the battery. Then hope that it doesnt come back on. If it doesnt, then ur fine, but if it does and its the knock sensor, replace it. hint (replace it urself its very easy)if dont know how to, look around i know there is a thread about it.

what did u want to know about emissions sensors?

if u wanna learn about sensors go to the link, and find what sensor u want to learn about.

http://autozone.com/servlet/UiBroker...3d80050348.jsp

Sobre un urinario decia:Un consejo de amigo,un consejo de hermano,que nunca tengas en el culo,lo que ahora tienes en la mano.

Last edited by DRUNKHORSE; Jul 25th, 2005 at 06:20 AM.
#8 Old Aug 3rd, 2005, 10:48 AM
NissanForums Newbie
 
Join Date: Aug 2005
Posts: 2
knock sensor failure

Quote:
Originally Posted by bbpatt
I have a 1995 Maxima GXE that has the "check engine" light on. I had a diagnostic run and the code came back P0325 - Knock Sensor Failure. The estimate for repair is $630 (including the $95 diagnostic charge).

The light came on over 5 weeks ago. Before I could get it in to the shop to have it looked at, the entire electrical system shut down while driving. Fortunately, I was able to pull off the road and it (the system) recharged enough to get me to Sears Auto Center. I wound up having both the battery and alternator replaced by Sears (the battery was still under warranty, so that was free.) The cost of repairs was over $400.

When I got the car back, the check engine light stayed off for a week. Now that its back on, I am looking at another $600 for repairs.

What is going on with this car? It has only 75,000 miles on it. What will happen if I don't have this repaired right away?

I appreciate any help and insight!!!
I work at a nissan dealership and this code comes up at times. As other posters have noted this code fdoes not tigger the ses light. On those that do show this code we have found that the knock sensor is failed.If you use premium fuel as recommended there is no advers effect (i own a 97 i30 with the kock sensor failure and i do use premium fuel and have put on 75k miles with no advers effect). if you use regular unleaded and the engine develops a ping the pcm will not be able to retard the spark timing and henceforth engine damage may occur
#9 Old Aug 3rd, 2005, 02:03 PM
Nissan Enthusiast
 
Join Date: Sep 2004
Location: New York
Posts: 110
I thought if you have a bad knock sensor, the computer will only run in the retard timing mode. This is why there is lost of power and gas mileage with a bad kncok sensor.
#10 Old Aug 4th, 2005, 03:21 PM
NissanForums Newbie
 
Join Date: Jul 2005
Posts: 7
Thanks for the info.....I do not use premium fuel for the vehicle. However, it looks like I need to start right away using it.

Interestingly....the "check engine" light that had come on for the second time, has now gone off again. The car seems to run fine as far as I can tell, but it does seem a bit off.
#11 Old Aug 18th, 2005, 11:40 AM
NissanForums Newbie
 
julyguy's Avatar
 
Join Date: Jun 2005
Location: Winnipeg
Posts: 2
Surprised!

I have a 96 Maxima GLE with over 182K km on it and I've also been experiencing the same problem since May 05.

Other than this, the car's been virtually problem free except for normal wear items such as tires and brakes. It still has it's original exhaust system.

I did have the knock sensor replaced which was expensive (> $700 Cdn) and the problem went away for about 2 weeks. The light then came back on for another week and again went off. It has now come back on. At all times, I didn't have any driveability problems or excess fuel usage.

From what I've read here, it could be may be related to problems in the wiring harness due to the car's age. It's been suggested that it could be caused by corrosion problems at the wire connectors.

I'm going to have it checked and I'll share what I find out.

Also, I've always used premium gas and, despite the current $1.10 per liter cost here, will continue to do so.
#12 Old Aug 18th, 2005, 02:45 PM
Nissan Addict
 
Join Date: Feb 2004
Location: California
Posts: 782
$600 to replace the knock sensor?

http://www.motorvate.ca/mvp.php/507
#13 Old Aug 18th, 2005, 05:35 PM
NissanForums Newbie
 
Join Date: Aug 2005
Posts: 8
It is a very common problem with the Maxima's diagnostic that a Knock Sensor code comes up. However, in about 90% of the cases, it has nothing to do with the Knock sensor. Most of the time it's the O2 sensor that sends the code.

Also Maximas are made to run on regular unleaded gas, so using it will not harm the car in any way.
#14 Old Aug 19th, 2005, 12:03 AM
Nissan Enthusiast
 
Join Date: Jun 2005
Location: Schaumburg, IL
Posts: 38
Quote:
Originally Posted by levg79
It is a very common problem with the Maxima's diagnostic that a Knock Sensor code comes up. However, in about 90% of the cases, it has nothing to do with the Knock sensor. Most of the time it's the O2 sensor that sends the code.

Also Maximas are made to run on regular unleaded gas, so using it will not harm the car in any way.
in my manual it says to use a fuel with an octane level no less than 91
#15 Old Sep 3rd, 2005, 12:40 PM
NissanForums Newbie
 
Join Date: Jul 2005
Posts: 7
Fuel....

I replaced the plugs a few weeks ago....they were very bad. The vehicle ran well for a few days, but it is still "pinging" or shaking when idle.

Also, the "check engine" light has come on again. I am going to try to replace the knock sensor and then replace the O2 sensor as well.

With gas prices over $3.30 a gallon for reg unleaded, I cannot afford to keep putting in premium fuel.
Reply

  Nissan Forum > Maxima > A32 1995-1999 Chassis

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Nissan Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



  Similar Threads
Thread Thread Starter Forum Replies Last Post
All you ever wanted to know about your Check Engine Light but were afraid to ask JKWright L31 2002 - 2006 165 Jun 5th, 2014 02:08 PM
No Spark From Coil Sr20de Engine (ecu Code 21) SE-Rello SR-Series Engines (DE/VE) 1 Mar 18th, 2014 08:14 PM
I am throwing a knock sensor code, anyone have this problem? se-r1 SR-Series Engines (DE/VE) 14 Nov 8th, 2005 08:29 PM
Engine Knock Sensor Mmichael Truck & SUV 2 Jan 25th, 2005 06:40 AM
Engine miss, stall with code 34 message jocko k U13 1993-1997 Altima 1 Feb 12th, 2004 02:32 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On