Where is O2 sensor Bank 2 sensor 1 on 2004 Mercury Monterey?

On a 2004 Mercury Monterey, the O2 sensor Bank 2 Sensor 1 is located on the exhaust system, specifically before the catalytic converter on the driver's side of the vehicle. It monitors the oxygen levels in the exhaust gases to help the engine control module adjust the air-fuel mixture. Accessing it may require lifting the vehicle for better visibility and reach.