Where is the oxygen sensor located in 2004 Nissan Titan?

In a 2004 Nissan Titan, the oxygen sensors are typically located in two main areas: one before the catalytic converter (upstream sensor) and one after the catalytic converter (downstream sensor). The upstream sensor is usually found on the exhaust manifold or the front pipe, while the downstream sensor is located on the exhaust pipe after the catalytic converter. Accessing these sensors may require lifting the vehicle for better visibility and reach.