Where is the o2 sensor located on a BMW X3 2004?

Answer 1

On a 2004 BMW X3, the oxygen (O2) sensors are typically located in two main areas: one before the catalytic converter (upstream sensor) and another after the catalytic converter (downstream sensor). The upstream sensor is usually found on the exhaust manifold or just before the exhaust pipe enters the catalytic converter, while the downstream sensor is located after the catalytic converter. Accessing these sensors may require lifting the vehicle and working under it, depending on the configuration.