The 1998 Toyota Avalon oxygen sensor fuse can be found in the fuse box. The oxygen sensor fuse will be the number 17 fuse.
Open the hood
A/F sensor are located in each exhaust manifold, O2 sensor After catalytic converter on exhaust pipe
bank 1,sensor 1 oxygen senor by exhaust manifold
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How do you change oxygen sensor in 1992 Toyota corolla? Is there a model engine 4A-FE without a oxygen sensor?
how can i check sensor to see which one is bad on toyota avalon
under the intake manifold
The 1988 Toyota oxygen sensor is located on the air cleaner housing. You will find the sensor, on the back side of the housing.
There is most likely 2 or 3 O2 sensor's on your car. Just follow the exhaust system starting from the motor you should see them.