exhaust pipe
Bank one sensor two refers to the oxygen sensor. The bank one sensor two oxygen sensor is on the front side of the engine, after the catalytic converter.
on the driver side
exhaust pipe
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 two sensor two on a 2002 Ram is passenger side, after the catalyst.
bank 1 sensor 1 2002 on toyots sienna
Trouble code P0138 means:O2 sensor circuit high voltage (Bank 1 Sensor 2)
Bank 2 is the drivers side of the engine in a 2002 Mercury Mountaineer Sensor 2 is after the catalytic converter ( downstream )
Oxygen Sensors are usually in the exaust pipes!
Bank 1 is where cylinder #1 is. Sensor 1 is ahead of the converter (usually in the manifold.
Replace it. Sensor 2 is the one AFTER the catalytic converter.
Oxygen sensor heater malfunction (cylinder bank #2, sensor #1)