Downstream o2 sensor wiring

Hi
I recently bought an 06 Tundra with missing cats. The wires are a mess. I bout new o2 sensors. Does anyone know the color wires and how they connect to my new sensors? 2 white leads, one back. One blue. Any help would be greatly appreciated!

Thanks

 

If you have no cats and no check engine lights you may just want to leave it alone unless you are trying to pass emissions.

 

Yes. I'm trying to smog to transfer toy name..California

 

Have any pics of what you have going on at the moment?

 

Looks like he'll.

 

Looks like it could be saved. I can try and get pics with possible wire colors tomorrow sometime. By then someone may chime in with either a wiring diagram or an explanation of their own.

Have you already bought new cats?

 

Ooof. Someone cut that wiring hard. O2 sensors are sensitive, breaking or extending the wire can lead to unexpected fluctuations and thus unexpected output.

When you repair, you're going to want to go to the highest damage point and repair there, and make sure you use waterproof splices. So in the 1st pic, you'll want to pull off all that electrical tape, which probably has a wire break under it, and start there.

 

Where did you get these sensors from and who is the Mfg ?

The reason I ask is because Denso(OEM) for example are 2 blacks for heater circuit and one blue(signal)/one white(gnd)




The 2nd picture you posted above tells me that is passenger side of a V8(2uZ-FE) AC ?

 

Not only that, but people who bought non-Denso and/or non-Bosch have complained about operational issues and continued check engine lights.

And scAmazon/fleaBay/WallyMart often sell counterfeits online, so purchasing auto parts at either place is a huge mistake.

 

Thank you very much! I appreciate this!!! Thanks for your help! I'll let you know how it goes!

 

Btw, yes. I already bought new cats

 

That's another interesting topic. There are very few brands of cats you can run on these trucks without tripping the money light (CEL) periodically.

Magnaflow seems to have the best bang vs. buck vs. no-code-throwing from what others here have found.

 

Thanks for the tip! I didn't know magnaflow sold o2 sensors!

 

Magnaflow cats.
You want to use Denso o2, though some have had luck with Bosch, Denso never have issues.
And avoid scAmazon, fleaBay, WallyMart, you'll likely get very authentic-looking counterfeits, it's rampant.