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Oxygen sensors on a 1989 Toyota SR5 and located near the catalytic converter. The sensors read the emissions from the vehicle so the ECU knows ho much fuel to run in the engine.
The oxygen sensors on a 2004 Toyota Corolla are located within the exhaust manifold. They constantly monitor oxygen levels in the exhaust and allow the engine to make adjustments accordingly.
air fuel ratio sensors are in the exhaust-they are like oxygen sensors but work differently
You have two oxygen sensors in Toyota Rav4, One before the catalytic converter and another after.
In the manifolds - sometimes difficult to get at.
== == 1996 Corolla's have two oxygen sensors. The first sensor, is pre catalytic converter. It is located on the exhaust manifold. The second sensor is post catalytic converter.
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There are two of them.
none
The oxygen sensors are located in the exhaust pipes.
Only one.