Question about 1998 Nissan Altima

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I have a 1998 Nissan Altima. The Service Engine Light is on. I got it checked and was told that 2 codes showed up. One is for a knock sensor and the other is for a EGR Valve. How can I replace the knock sensor myself? What tools would be necessary for the replace this sensor and to clean or repair the EGR valve? Would it be much easier to have a mechanic do the job? If so how would be average labor charge for this job?

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  • 3 more comments 
  • vsam08 Oct 13, 2008

    Can someone provide advice on this? I have the exact same problem.


  • JOEBOYSOPRAN Oct 29, 2008


  • Anonymous Jan 28, 2009

    How do u remove the bulb?

  • Jerline Haywood Oct 31, 2012

    my car want star it'sot getting fire what that 's mean

  • Anonymous Mar 22, 2014

    what is the egr. and what is knock valve for spark knocks



1 Answer

What i did is remove the check engine bulb coz even if you change the knock sensor the light will still go on coz our engine is a bit old.

Posted on Nov 07, 2008


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My 2005 Nissan Altima 3.5 is idling at 800 rpm's, and my service engine soon light came on. The code read for a Chrysler? P1283, and Fuel pump module detected an incorrect low idle, low idle select...

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I have Nissan Altima 2001 running 93500 K. since last a week service engine soon light on and showing P0141 & 0325 codes. What is the fix for P0141 and P0325 error codes.

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Nissan altima 2000 2.4l p135 and p325 come up ,

I would start with the o2 sensor first if its not working right it will set off the knock sensor but beware of vaccum leaks sounds like your running lean

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1 Answer

1998 nissan altima dashboard display engine service soon

Hello and thank you for using FixYa!

The service engine soon light comes on when a fault is detected in the emission system. The service engine soon light is the same thing as a check engine light. A scan tool will be needed to get the code for the failure, so the proper repairs can be made.

Thanks Jay!

Jul 04, 2009 | 1998 Nissan Altima

1 Answer

I have 1998 Nissan Frontier with an engine light on. I paid a mechanic to put in a speed sensor and the light came back on the day after he put in the new part. The codes before he worked on the truck were...

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P1444 Canister Purge Volume Control Solenoid Valve

Generic OBD II code:
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I hopes this helps you.
Replace or fix these two items should do the trick.
It's hard to diagnose a car over a computer.

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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.

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Nita0605 you should have included a little more infomation. Does the car drive any different when the light is on? Most likely you have a trouble code P0325.........Knock sensor fault or O2 sensor problem. I wouldn't worry about it until the light stays on

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