Where is the O2 sensor for 2001 s-type jaguar?

The O2 sensors on a 2001 Jaguar S-Type are located in the exhaust system. There are typically two sensors: one positioned upstream (pre-catalytic converter) and one downstream (post-catalytic converter) on each bank of the engine. You can find the upstream sensors near the exhaust manifolds, while the downstream sensors are located further along the exhaust pipes before the catalytic converters. Accessing them may require lifting the vehicle for better visibility and reach.