Where is heated oxygen sensor bank bb 1 sensor located acura 97 2.5tl?

Acura TL 2.5 litre with straight 5 cylinder engines has only one exhaust manifold similar to 4 cylinder engines. Hence, it has only one bank. Therefore, it is fitted with two oxygen sensors only. The first one is around the exit of the exhaust manifold (follow the manifold to the start of the pipe) and the second one screws into the catalytic converter. The first sensor is called bank 1 sensor 1 and the second one is called bank 1 sensor 2. Hope this helps.