Oxygen sensor bank 2 sensor 1

FIXSKY

MEMBER
1999 TOYOTA SIENNA
6 CYL
2WD
AUTOMATIC
123,000 MILES

I check the trouble code for my sienna and its calling for o2 sensor malfunction its say bank 2 sensor 1

my question the location of this sensor is the one by the firewall or the one on the radiator side I want to know so I can get the right sensor

thanks for the help

Sunday, November 23rd, 2008 AT 5:18 PM

6 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Hello,

Here is a guide to help you see what you are in for when changing the oxygen sensor

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

Check out the diagrams (Below)

Please let us know if you need anything else to get the problem fixed.

Cheers

Image (Click to make bigger)

Was this

answer

helpful?

Yes

Sunday, November 23rd, 2008 AT 6:13 PM

PLVINAL

MEMBER
1 POST
1999 TOYOTA SIENNA
6 CYL
2WD
AUTOMATIC
89,000 MILES

I had an error code that indicated bank 1 sensor 1 A/F sensor was bad. I have purchased a new sensor, but not sure form the Chilton Diagram where this particular sensor is located. Could you help with giving a way to locate? I found 2 different sensors but the one under the car sounds like it might be the O2 sensor, whereas the one under the hood has a different connector.

Was this

answer

helpful?

Yes

Friday, April 13th, 2018 AT 12:06 PM (Merged)

RASMATAZ

MECHANIC
75,992 POSTS

Bank 1 Sensor 1

Bank 1 is usually the front bank of cylinders on a transverse mounted V6 engine.

The one on the exhaust is the heater oxygen sensor could be 3/4 wires.

Was this

answer

helpful?

Yes

Friday, April 13th, 2018 AT 12:06 PM (Merged)

CANDYMANMS