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Where is the Oxygen sensor on a 2002 corolla?

April 26, 2017corolla oxygen sensor

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Where is the Oxygen sensor on a 2002 corolla?

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On the back side of the motor before the converter. It will have a plug in wire about one foot long and the O2 sensor bolts into the exhaust with 2 -12 mm nuts. There is also an after the converter O2 sensor behind the Cat. that you have to get up under the car. You will see it.