Where is the oxygen sensors on the 2002 Toyota Sequoia?

Answer 1

There are 4 of them. Two on each exhaust pipe. One will be before the catalytic converter and one will be after. Bank 2 is on the passenger side of the car. Bank 1 is on the drivers side. position 1 is in front of the cat position is behind the cat. Each sensor is referred to by bank 1 sensor 2, etc etc. You have to get at them from under the car. The rear ones are easy to remove the front ones can be an absolute nightmare sometimes. Good Luck.