The drivers side cylinder head is bank 2
Bank # 1 is the passenger side of your motor
The passenger side of the motor is bank 1
NUMBER ONE CYLINDER IS BANK 1
Bank 1 is usually on the driver side of the motor and bank 2 is the passenger, sensor 1 is the one on the header and sensor 2 would be after the catalytic converters Bank 1 is the same side as cylinder #1. Bank 2 is the other side.
both sides you need to know which bank you are working on the scanner should have said something like bank 1 sensor 1 or bank 1 sensor 2 a bank is a side of the motor bank 1 is the side with cylinder #1 and the the other side is bank 2 if it is sensor 1 then that is before the catalytic converter if it sensor 2 then it is after the cat. hope that helps
bank 1 is the passenger side of the motor sensor 2 is in the exhaust pipe after ( downstream of ) the catalytic converter
The drivers side
Bank 1 is cylinder 1 side of the motor. Sensor 2 is the back oxygen sensor (after the catalytic converter.
Bank 1 is the passenger side of the motor Sensor 2 is in the exhaust after the exhaust passes through the catalytic converter
Bank 2 is the drivers side of your Ford Mustang engine Sensor 1 would be between the motor and the catalytic converter ( upstream )
Bank 2 is the right side of the motor if sitting in the seat and sensor 1 is the first 02 sensor that is in the exhaust manifold.