My check engine light came on like 2 weeks ago and I finally got it checked out yesterday. I took it to the dealer and he called me back and told me that the error codes were for an o2 sensor and my knock sensor ..$600 job!!

I was wondering if someone could tell me how those problems could be affecting my car. Also, if someone could refer me to an o2 replacement guide on the net it'd be great. Thanks for your time.

-M

 

Next time read the FAQs, you would of found everything you were looking for.


KS: http://www.motorvate.ca/mvp.php/507

O2: http://www.motorvate.ca/mvp.php/508 (This is a write up for a front O2, you didn't specify which one you need to change but this will put you on the right track)

You can also buy a knock sensor on eBay for 90$ (160 at the stealership) and takes 30mins to change with the right tool and small hands. 02 is also a sinch to change. Do it yourslef and save 400$

 

It's $150 in parts and do the work yourself.

 

You should change these. Are you using 93 Octane gasonline? You should be.

Anyway to answer your question, nothing really bad will happen if you don't change them, but you will probably suffer from reduced performance.

 

That is insane !! should post who the dealer is on here and maybe call nissan and tell them about it i dont see how it could possibly cost that much unless they changed all the o2 and knock +labor + charge for consult reading ,,,,DO it YOURSELF for sure !!!!

 

-- Yea it is insane. I was looking around on nissan parts whole sale and I ran into a problem. I found the knock sensor ok, but when it comes to the oxygen sensor I can't seem to figure which one I need. I know that I need to replace the sensor in the front, but can someone tell me which part it is? Here is the link:

http://www2.nisspartswholesale.com/p...sor&category=C

Thanks in advance

-M

 

The ECU codes would tell you which O2 sensor is bad. Fix the O2 sensor first. Then check ECU code (even if CEL ligth is off) to see if the KS code is still there. $600 is insane. Do it yourself and save $$$. Or get the sensor and pay a shop to put it in.

 

I took my car in to get a diagnotic done and the code they gave me was "P0135 B1 Front Oxygen Sensor". Is there more than one oxygen sensor in the front? I havn't been able to find a guide that will translate dealer codes either.

 

P0135 = upstream oxygen sensor heater fault (right bank). Haynes manual ($20) translates all the codes. I never regretted that manual purchase.

 

also check this limk:

http://vbxmaxima.8m.com/ecu.html

 

Right bank is near the fire wall. To change that sensor, you need to lift the car up.

 

Has anyone ordered from http://www2.nisspartswholesale.com/ before?

 

*bump*

Can anyone help me? I'm kinda in a rush and I need a reliable site to order my knock sensor and oxygen sensor from. Thanks!

-M

 

I got my o2 sensors from www.oxygensensors.com

Very fast shipping, and great price. I had a code for one sensor, but at the price I found here, I decided to replace both front sensors. I installed them and my car is doing much better on gas.

 

Thanks, I just bought the o2 (Bosh O.E.) now the real question is do I buy the Knock Sensor with or without a harness. I can find the actual knock for about $120, but with the harness its about $160 (www.courtesy-nissan.com), but then again is it worth going the safer route by getting the harness, any ideas anyone?

 

As UncleMax98 said, replace the O2 sensor first - the KS code is often a ghost code that will go away when you change the O2 sensor.

You do not need the harness unless your harness is bad - in which case you may not need the KS.