There is no bank two on this van.
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 was the upstream 02 sensor located before the catalytic con on my 03.
Bank 1 would be the bank of cylinders that contain cylinder number 1. Bank 1 on the 3.9 would be the bank of cylinders located on the drivers side of the engine. Bank 1 sensor 2 would be the O2 sensor located after the catalytic converter.
There are 2 catalytic converters on a V8 2002 Toyota Tundra. Bank 1 is the manifold and cat on the drivers side and bank 2 is the manifold and cat on the passenger side. Sensor 1 is the sensor on the exhaust manifold before the catalytic converter. Sensor 2 is the sensor located after the cat converter. Bank 2 Sensor 2 is the sensor located after the catalytic coverter on the passenger 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 sensor 1 is screwed into the exhaust manifold on the back of the engine. Bank 1 sensor 2 is screwed into the catalytic converter.Bank 1 sensor 1 is screwed into the exhaust manifold on the back of the engine. Bank 1 sensor 2 is screwed into the catalytic converter.
Bank 2 locates on the opposite side of the cylinder # 1 and the sensor 1 is locates in the front
Bank # 1 is the passenger side of the engine Sensor # 1 is before the catalytic converter ( upstream ) Sensor # 2 is after the catalytic converter ( downstream )
Bank 1 sensor 1 is closest to the firewall and located just below the exaust manifold. Easiest to change from under car.
On a 2002 Ford E-150 : Bank 1 is the passenger side of the engine ( V6 and V8 engines ) Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter ( upstream sensor )
Bank 2 is on the passenger side of the engine and the o2 sensor is located right after the cat converter on the passenger side. Bank 1 is on the drivers side of the engine.
It is the sensor that is screwed into the exhaust manifold on the back of the engine.