Good O2 Sensor replacement guide?

[Domingo]

It appears the link to the O2 Sensor replacement guide in the 100 Series FAQ is now a dead link. (http://www.monkeeworks.com/articles/auto/LX470.o2/pt1.diag/index.php)

Anyone know of another O2 Sensor replacement guide that you could point me to?

My 2000 LC is throwing P0155 - Bank 2 Sensor 1 code.

Does anyone know the location of the Bank 2 Sensor 1?

Time to call Cruiser Dan for some parts!

 

[ntsaint]

Should be Passenger side, upstream. Buy the part from CDan, any muffler shop will change it in 10 mins for $20. That's what I did anyway.

www.tlcfaq.com has all the info you'll need for O2s

 

[Domingo]

ntsaint - thanks for the info! The tlcfaq.com site has a ton of great info.

Here is their guide for O2 Sensor replacement along with part numbers:

http://tlcfaq.com/main/2012/09/oxygen-sensor-o2-part-numbers-and-replacement/

 

[Domingo]

@ntsaint:

Should replace the other O2 Sensors too? Or, just wait for them to fail?

I have a 2000 Landcruiser with 140,000 miles and I have never replaced any of the O2 sensors.

 

[ntsaint]

I'm the wrong person to answer tech. I did both of mine at the same time but only because it was up on the rack...


...via IH8MUD app

 

[DJWUZJ]

I did both of my pre-cat O2 sensors at the same time - neither had failed but had about 150k miles on them. Saw a SLIGHT improvement in MPG. More PM than anything.

If you live in a low rust area you can prob bust them free easily. PS is the hardest - need to reach over the wheel and under inner fender. Be easy on the connectors, and Don't forget anti-sieze when you reinstall.

Like @ntsaint said - 20 minute job.

 

[SkiLyft]

Just got the same error code last week: P-0155 Bank 2 sensor 1

After weighing the options of OEM Toyota vs Denso oxygen sensors I ended up going with Denso (mainly because the OEM Toyota O2 sensors are Denso it's written right on the side). Amazon had them shipped in 2 days for a grand total of $90 for both (yes I did both even though one was bad).

Got the splash guard off and realized my 23mm deep socket would not work with the wires hanging out the back. So I drove to O'Rileys auto parts and got the "special" socket ($9)

After waiting for 30 min for the truck to cool it was a quick 15 min job! Not back for $100 [emoji106]


Here are some photos for others to reference:

Drivers side:

Passenger side:

 

[Leroy the LX]

Hi All,

Does anyone know where to press on the harness for the downstream sensors? I recently bought the replacement part for bank 2 sensor 2 but I cannot figure out for the life of me how to release the clip since it's way up there above the cat converter. Any help is greatly appreciated as I'm trying to not spend a fortune at a repair shop. Thanks!

 

[VirginiaSlim]

Hi All,

Does anyone know where to press on the harness for the downstream sensors? I recently bought the replacement part for bank 2 sensor 2 but I cannot figure out for the life of me how to release the clip since it's way up there above the cat converter. Any help is greatly appreciated as I'm trying to not spend a fortune at a repair shop. Thanks!

Try using a flathead screwdriver to press down on the plastic tab. Then give the other side of the clip (connected to the sensor wires) a good pull in opposite direction.

 

[NolaNomad]

Just got the same error code last week: P-0155 Bank 2 sensor 1

After weighing the options of OEM Toyota vs Denso oxygen sensors I ended up going with Denso (mainly because the OEM Toyota O2 sensors are Denso it's written right on the side). Amazon had them shipped in 2 days for a grand total of $90 for both (yes I did both even though one was bad).

Got the splash guard off and realized my 23mm deep socket would not work with the wires hanging out the back. So I drove to O'Rileys auto parts and got the "special" socket ($9)

After waiting for 30 min for the truck to cool it was a quick 15 min job! Not back for $100 [emoji106]


Here are some photos for others to reference:

Drivers side:
View attachment 938465

Passenger side:
View attachment 938466

Hey bud, what special tool did you get for that job, would a open end box do the trick? What size bolt is it?

 

[crypticresponse]

A couple of notes since I just did this job.
1) You need a 12mm wrench or socket to remove the nuts that hold the sensor on.
2) However, if yours are old like mine, then the nuts will be so rusted that you can't remove them without rounding them off. I bought an Orion Motor Tech bolt/but remover set, which has spiral flute sockets that will grip on to the nut so you can still remove it. This was $24.
3) After doing the job with the Bosch 13104 sensor, I found the sensor to be defective and, thus, am going to try again with the Denso 234-4154, which was a little more money. Given Amazon's easy returns, I suggest you just buy a spare one in case you need it and return it if you don't.
4) The part number for the replacement nuts from Toyota is 90179-08059. These were a whopping $4 each from the dealer, but still cheaper than buying the wrong nut from somewhere else.
5) FWIW, the job can be done while laying on the garage floor and not jacking up the car. It could take 15 minutes if everything goes easily or 2 hours if the nuts, the clip, etc. go wrong for you.
6) Both the Denso and the Bosch came with the gasket; it does not need to be ordered separately.