Bank 2 is the drivers side of your Ford Mustang engine
Sensor 1 is somewhere between the engine and the catalytic converter
On a 2001 Ford Mustang , 3.8 liter V6 engine : Bank 1 is the passenger side of the engine Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
Bank 2 is the driver's side of the engine in your Ford Mustang Sensor 2 is in the exhaust after the catalytic converter ( downstream )
Bank 1 is the passenger side of the engine
Bank one sensor one is above the converter.
bank 1 is the passenger side of the engine in your Ford Mustang , and sensor 2 is after the exhaust has passed through the catalytic converter ( downstream )
bank 2 is the drivers side of the engine in your Ford Mustang , and sensor 2 is after the exhaust has passed through the catalytic converter ( downstream )
In front of the catalytic converter on the passenger side
Bank 1 is the passenger side of the engine in your Ford Mustang Sensor 1 would be in the exhaust close to the engine before the exhaust enters the catalytic converter ( upstream )
Bank 1 is the oxygen sensor either screwed into ,or above the catalytic converter. Bank 2 is below the catalytic converter.
Bank 2 is the drivers side of the engine , sensor 2 is in the exhaust pipe after the catalytic converter ( downstream )
Passenger side exhaust
That would be the sensor after the catalytic converter.