Before cat, opposite side of cylinder #1.
bank 2 sensor 1 is before catalytic converter
Bank 1 is the bank of the engine that contains #1 cylinder. Bank 2 is the other bank. Sensor 1 is located before the catalytic converter. Sensor 2 is located after the cat converter.
On GM, bank one is drivers side of engine, bank 2 is passengers side. Sensor(s) 1 is the upstream sensor, meaning BEFORE catalytic converter. Sensor(s) 2 are located downstream, or AFTER the catalytic converter, therefore, bank 2, sensor 2 is located in the exhaust pipe leading from the passenger side of engine and after the catalytic converter.
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 is the passenger side of the engine / BANK #1 SENSOR # 1 is in the exhaust before the catalytic converter / BANK # 1 SENSOR # 2 is after the catalytic converter ( downstream ) ------------------------------------------------------------------------------------------------------------ BANK # 2 is the drivers side of the engine / BANK # 2 SENSOR # 1 is in the exhaust before the catalytic converter / BANK # 2 SENSOR # 2 is after the catalytic converter ( downstream )
Bank 2, Sensor 1 is located on the front of the engine(radiator side), before the first catalytic converter.
This will be located probably just before the catalytic converter on the exhaust
Bank 1 is the side of the engine near the firewall. Bank 2 near the radiator. Sensor 1 is before the catalyse converter sensor 2 after the catalyse converter. In your case it is the O2 sensor that behind the firewall and after the CC.
It is the first O2 sensor on the passenger side before the catalytic converter
Drivers side before the converter.
Bank 1 is not before or after it refers to the bank that includes cylinder number one.
Bank 2 is the drivers side of the engine on your Ford Explorer Sensor 1 is in the exhaust before the catalytic converter ( upstream ) Sensor 2 is in the exhaust after the catalytic converter ( downstream )