It depends on which sensor, O2/camshaft,etc. The O2 sensor is a straight metal sensor that is screwed into the exhaust. There is an upstream/bank1-sensor1 or down stream/bank1-sensor2 after the catalytic converter. A camshaft sensor is an L shaped, usually black sensor that is installed into the head closest to the firewall(bank1).
Bank two sensor two on a 2002 Ram is passenger side, after the catalyst.
The bank 1 sensor 1 oxygen sensor on a 2002 Honda Accord is located on the header. It is right next to the sensor circuit.
bank 1 sensor 1 2002 on toyots sienna
Mitsubishi Galant, 2002, 4-cyl, O2 sensor, bank 1 sensor 1 (upstream)... PART NUMBER: MR506364
Bank 2 is the drivers side of the engine in a 2002 Mercury Mountaineer Sensor 2 is after the catalytic converter ( downstream )
There is no bank two on this van.
Bank 1 is the pass side.
On a 2002 Ford Crown Victoria : Bank 2 is the drivers side of the engine Sensor 2 ( downstream sensor ) would be in the exhaust after the catalytic converter
Bank 1 is where cylinder #1 is. Sensor 1 is ahead of the converter (usually in the manifold.
Bank 1 sensor 1 was the upstream 02 sensor located before the catalytic con on my 03.
Underneath the gas tank
Bank one is on the side that the master cylinder is on bank two is the opposite side of the master cylinder