O2 Sensor

[LAD572001]

Help,

 

I need to replace the oxygen sensor in my 01 Pathfinder and anyone tell me where is located. This is an $80 part online but the dealer wants to charge me $300 for parts and labor.

 

I understand that it can be located in two different places.

[statikuz]

Incidentally, this question can also be located in two different places.

[Trialsin26]

Actually you have four different locations. Bank 1 Sensor 1 and 2, Bank 2 Sensor 1 and 2. How do you know the sensor is bad? The reason I ask is because on my 2001 Pathfinder the check engine light came on and it said it was the o2 sensor. My friend and I cleared the code and it has not come back. We figured it had something to do with low fuel and a different grade of gas because everything else looked good on his computer and everything is back to normal. My 01 only has 38,ooo mile. Just wondering. :confused:

[LAD572001]

The diagnostic test returned the following codes:

 

P0420 - CAT EFFICIENCY LOW BANK 1

P0430 - CAT EFFICIENCY LOW BANK 2

P1110 - MFR CTRLLED FUEL AND AIR METERING

 

I was told that these codes indicate that the O2 sensor maybe bad.

[lewisnc100]

P1110 is Intake Valve Timing Control (Left Bank), very common. I'd start there before touching the O2 sensors.

[LAD572001]

Ok, is this something I can check or replace myself? Remember I am a newbe and I am not firmialer with the term left bank or right bank. But I trying to save some money here so I am willing to learn.

 

Any help would be great.

 

:help:

[lewisnc100]

You might consider a subscription to www.alldata.com, it will give you the diagnostic charts for each trouble code, access to all TSBs, all Nissan service steps etc. Well worth the $24.95 ($14.95 after first year).

 

This was a new part as of 2001 so you might have trouble finding anyone with experience fixing this.

[Trialsin26]

Lad5, did your Service Engine Soon light come back on, or have you checked the codes again? Just wondering what happened? I noticed you had something about the P1110 MFR CRRLLED FUEL AND AIR METERING, and I was just wondering if that could have had anything to do we a vacuum leak in your fuel system or maybe your fuel cap wasn't on tight. Because that might have effected the O2 sensors as well. :allclean:

[Dreadeyed]

I replaced my fuel filter over the weekend, since then the " check engine light" disappeared. The fuel filter works for me. After I 've checked all the EVAP line, my instinct told me to change the filter and I did.