So Im getting this code now after installing sensors. P2A00 A/F Sensor 1 Bank 1 Circuit Range/Performance. Does this mean the Front sensor is not working correctly? Im guessing I should purchase another sensor. Which company is the best? Bosch, Ntk (Ngk), Denso or something else? My tech told me these are fragile and they break easily.

 

#1 is the pre-catalytic converter sensor
#2 is the post-catalytic converter sensor.
And yes these sensors can be damaged removing and installing.

 

Which one should I buy? Any specific company that is better suited for the Z? Looks like the front two sensors are the same sensors.

 

Be careful. OEM sensors have a unique connector that will NOT allow you to connect the wrong sensor to the wrong place.

With many aftermarket sensors you must splice the connector.

 

Bosch, Ntk, Denso make quality sensors, you wont go wrong with any of them and most of the OEM sensors are made by them anyway. I installed so many of them and never ran into a problem. However, do not get the universal o2 sensor, buy the one that made specific for your vehicle.

 

Im going for Bosch, Im guessing we just stick them in and reset the cpu. Im having a tech do this. The ones up front seem to have a plug at the end of the cord. Is there any difference in the two front sensors located at Bank 1 and Bank 2 that are closer to the fuel injector. Also the cord is longer then the ones located under the car. ( Which are the sensors after the cat converter )

 

I replaced the bank 2 sensor 1 o2 sensor with a direct plug-in Bosch unit and so far it is working great. The connector even matched the color of the stock o2 sensor and both had NTK Japan markings on them. I ordered the Bosch sensor online and paid about $85 shipped vs. the local parts stores wanting $140+tax for the same sensor.

 

Yea I just installed the two sensors and the light came back. Must be something else wrong with the car. I might have to check the fuel injector or something. I remember reading on my report that I might have engine running lean. Which my friend told me that maybe more air is coming in and its not balancing out.

 

I would suggest ordering one of the cheap OBDII usb cables off of ebay. I have one of these and it gives me more information to troubleshoot with than a generic code scanner. The codes I was receiving both pointed specifically to a lean issue, your code does not seem to be so specific. See this thread for the troubleshooting process that led me to replace my o2 sensor https://my350z.com/forum/maintenance...ding-code.html

 

From the dealer they gave me that code and a description that said engine was running lean and also the voltage at idle is kinda low. I got two more Bosch sensors since they seem real good. Let me read and see if this thread can help me out. Thanks.

 

what website did u get the O2 sensor from?

 

I actually bought mine from a seller on ebay, but amazon has one for $89 w/ free shipping here http://www.amazon.com/gp/product/B000CF3W8A

 

I bought OEM, best decision i ever made. Yes they are expensive, but they will last the life of the car, i made a stupid mistake with mine.

 

I certainly would not use some of the no-name universal fit sensors... but Bosch meets or exceeds OEM requirements and is used by many OEMs. It isn't as if Nissan actually manufactured the o2 sensor that came in the 350z. It would seem that even the "OEM" sensor does not last the life of the car or I would not have needed to replace it at 60k miles...

 

Isnt Bosch or Denso sensors just plugs in you just plug it in and it works. No wiring needed?

 

Bosch sensors are better than OEM, and they should just screw in and plug right in.

 

You can buy Bosch in universal (splicing required) or direct-fit versions. The link I provided earlier is for a direct-fit version.

 

Yea I put the direct one in there and it seems to just go bad real fast. I think something else is wrong like the air and fuel ratio isn't balancing out so I have to figure that out.

 

Not really... I work at a shop and bosch is the leading reason behind most of my O2/ afr sensor comebacks.

It is weird though we got a bosch O2 sensor today and when i opened the box denso was stamped on the sensor. I have never seen this before maybe some one at the parts store screwed up but weird none the less.

I would go with denso or OEM (which i believe might be made by denso)

 

The stupid engine light keeps coming back. Hella gay.