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Where is the o2 sensor on a 96 Honda civic dx?

There are two oxygen sensors on a 96 Honda Civic DX:

- Upstream oxygen sensor: The upstream oxygen sensor is located in the exhaust manifold. It monitors the air/fuel ratio of the exhaust gas coming out of the engine.

- Downstream oxygen sensor: The downstream oxygen sensor is located in the catalytic converter. It monitors the efficiency of the catalytic converter.