I did a search on oxygen sensor and 02 sensor and it said that no threads could be found.. I find that odd being this has to be one of many hot topics in the 5th gen forum..
I just need to know is there a difference between the primary and secondary sensor, also what brand is a good one to go with? I was looking around on ebay and i seen a few so has anyone had good luck with those..

 

you didn't search for long if you didnt find any...go to google type in oxygen sensor _____(your year goes there) maxima and I guarantee these forums will show up along with others....good hunting my friend

 

Yeah, there is a problem with the search engine on this forum right now. All my searches come blank too...

 

me too,

I search for idle or rough or start in titles come back no result

 

would you guys say that o2 sensors are "if they are not broke, dont fix them" type items? i got a code for just one of the sensors but i figured since i had the precats off to just change all of them..

 

i would change only the one thats bad and go with oem. i forget how much, but they are over 100 bux a piece, so if it aint broke, dont fix it!

 

137.xx, no bueno.

 

Did you try OxygenSensors.com? I bought all mine there and they are great. Good prices and plug-and-play replacements.

As for the "all or just the broken," I replaced mine as the codes went off, however I think I ended up replacing them all within a 9-month period.

 

Did you use some sort of special tool or with what?

 

I would not rush into a replacement. I suggest you:

• Disconnect the battery overnight.
• Optionally, clean the "engine ground" contacts.

This is how I fixed my problem (codes p0138, p0139, and p0430, but the car was running just fine).

I was about to order a replacement sensor when I received this advice. After an overnight disconnect, all by codes and CEL light went away and never came back.

background/reasons: It seems that the thresholds for triggering the codes/CEL are too tight (like 5%), with the result that the ECU may indicate a malfunction when in reality, nothing is wrong.