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Ron Z.
Ron Z., - Toyota Tech -
Category: Toyota
Satisfied Customers: 18773
Experience:  18+yrs experience. State Inspector and Toyota Diagnostics
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2006 toyota avalon: location of bank1 sensor 1 &

Customer Question

location of bank1 sensor 1 & how to reach and replace on 2006 toyota avalon
Submitted: 6 years ago.
Category: Toyota
Expert:  Ron Z. replied 6 years ago.

Welcome to! My name is DriveFast71(Ron) and I will do my best to answer all of your questions completely and accurately.


The A/F Sensor at Bank1 Sensor1 is located on the exhaust manifold, closest to the firewall (rear) of the engine compartment. Usually the best access is goign to be from under the vehicle, looking upwards to the exhaust manifold. There is a tool you can usually rent - Oxygen Sensor Socket) that will make this job much easier. The best bet is a long handle on this special socket for added leverage. Unplug the electrical connect, insert the special tool with a long handle attached, and remove the sensor.



A close-up view of the sensor in the exhaust manifold with the special tool in place:


Customer: replied 6 years ago.

is the A/F sensor same as Oxygen sensor?

Expert:  Ron Z. replied 6 years ago.
Yes. Toyota uses A/F (Air/Fuel Ratio) Sensors in their Sensor 1's. It IS, essentially, an Oxygen Sensor... just... "smarter". These sensors examine the exhaust flow in more depth, and give more info to the PCM about that exhaust content.
Ron Z. and other Toyota Specialists are ready to help you
Customer: replied 6 years ago.
can you tell me how to access the bank 1 sensor 1 connector
Expert:  Ron Z. replied 6 years ago.

It's a little tight, but you can access the electrical connector from the top.

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