How many oxygen sensors does a 2004 Honda Civic dx have?

A 2004 Honda Civic DX typically has two oxygen sensors: one located in the exhaust manifold (upstream sensor) before the catalytic converter, and another located after the catalytic converter (downstream sensor). These sensors help monitor the engine's air-fuel mixture and the efficiency of the catalytic converter. However, specific configurations may vary slightly based on the engine type and emissions system.