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What is your question?
How many O2 sensors in 02 Toyota Highlander limited V6?
What makes this problem better or worse?
I went underneath of my car and found 3 O2 sensors or they were looking like same outside bodies
1 Reply
Hello, your V6 engine will have 4 heated oxygen sensors. You have 2 "banks" of cylinders. Each bank serves its own exhaust manifold and pipe. Each has a catalytic converter. One sensor on each side will be before the catalytic converter, and one on each side will be after it - for a total of 4 sensors. Are you experiencing trouble with your vehicle?
Well, Dave, I hate to tell you this, but Toyota changed a lot over years. The Toyota I am currently working on is a 2002 Toyota Highlander V6 3.0, with a TOTAL of Three O2 sensors. One each on each exhaust bank, prior to going into the cat, and then the heated output sensor that is located aft of the Cat goes up through the floor. Different Years, different setup.