2004 Toyota Highlander Upstream O2 sensor

NOTSOFAST

MEMBER
2004 TOYOTA HIGHLANDER
4 CYL
2WD
AUTOMATIC
35,250 MILES

Getting a code indicating it needs replacing. Sensor is a Bosch Part#15984. The sensor is made with what I would call a heat shield around it that won`t allow a sensor socket to get to the sensor`s 7/8`s nut. Is there a special thin walled sensor socket available

or did Toyota do this by design to force people to bring the car to a dealership because they have a special tool which is not available to the public ? Anyway I haven`t been able to find a sensor socket that will work in this application. They are all too thick walled. Thanks in advance.

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

Yes, there is a socket that is made for this. Basically, you need to get the o2 sensor socket that will help with removing this.

Here are a couple guides that will help with replacing o2 sensors:

https://youtu.be/gY69eK79Fhk

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Plus, below you will find the information about the sensor and socket which is just a common one that will work.

As you can see this is a thin wall socket that has a cut out of the side that will allow the wire to come out so that you don't have to cut the wires.

Please run through this info and let us know what questions you have.

Thanks

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