Where are the Oxygen sensors in a 1997 Lexus ls400?

In a 1997 Lexus LS400, there are typically two oxygen sensors located in the exhaust system. The first sensor, known as the upstream sensor, is positioned before the catalytic converter, while the second sensor, the downstream sensor, is located after the catalytic converter. Both sensors are mounted on the exhaust pipes and are crucial for monitoring the air-fuel mixture and emissions control. Accessing them may require lifting the vehicle for better visibility.