Want this question answered?
Bank 1 is the bank of cylinders that contain the number 1 cylinder. O2 sensor 1 is the first O2 sensor in the exhaust system between the engine and the catalytic converter.
bank 1 is always the head with the number 1 spark plug and the number 1 sensor is always in front of the converters closest to the motor
Bank 1 is the bank of cylinders that contain cylinder 1. The O2 Sensor 1 is the O2 sensor located in the exhaust system between the cylinder head and the catalytic converter, also known as the "upstream" O2 sensor.
same thing
Bank 2 is passenger side. O2 sensor 1 is threaded into the exhaust system between engine and catalytic converter.
The bank 1, sensor 3, O2 sensor would be the O2 sensor post cat.
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.
You did not specify which O2 sensor it is. Is it sensor 1 bank 1, sensor 2 bank 2, sensor 2 bank 1, or sensor 1 bank 2. There are four O2 sensors on a mazda 626
usually bank 1 is the bank with # 1 cylinder in it and sensor # 1 is the front o2 sensor(usually in the manifold). You will need a O2 sensor socket or a 22mm wrench or deep socket.
P0137 = O2 sensor circuit low volts (bank 1 sensor 2). Could be a faulty B1 S2 O2 sensor.
On a Ford Expedition : Bank 2 is the drivers side of the engine Sensor 1 is between the engine and the catalytic converter ( upstream )
Is this bank 2 sensor 1 or sensor 2?