S type jaguar fault code P1646

Hello, is there any help on here, i have a 3L s type jaguar 2004, engine management light came on got fault code P1646 Lambda sensor bank 1, what side is bank 1 passenger side or drivers side, plus which sensor is it with there being two, many thanks keith

SDS003_V6_cylinder_numbering.pdf (21.5 KB)

Passenger side or drivers side would depend on whether the car is Left Hand or Right Hand Drive.