there are upstream and down stream sensor.bank 1 is driver side location of the exaust manifold bank 2 is passanger.sensor 1 is before the catalityc converter and sensor 2 is after.And just to for-warn you a new sensor is about 80 bucks
On a Ford Explorer , Ford Expedition , bank 2 is the drivers side of the engine
Sensor 1 is in the exhaust before it enters the catalytic converter ( upstream )
The oxygen sensor bank 1 is located in the exhaust manifold. The oxygen sensor bank 2 on the 1996 BMW 328is is located in the head pipe.
3, sensor 1 bank 1, sensor 2 bank 1, sensor 2 bank 2
Your in luck...that should be the oxygen sensor in the exhaust manifold at the front of the engine compartment. Bank 2 is the bank of cylinders that does NOT contain the #1 cylinder. That bank is bank 1. Sensor 1 is the oxygen sensor upstream of the catalytic converter, and sensor 2 is the one after the cat.
Bank 1 is the bank that sits closest to the front of the vehicle. Bank one is the bank with cylinder # 1. You have 4 oxygen sensors, (bank 1 sensor 1, bank 1 sensor 2, bank 2 sensor 1 and bank 2 sensor2). Follow the exhaust from the head of bank 1. The first sensor you come to is sensor 1, the second is sensor 2.
Try to picture this Bank 1 Sensor 1 Bank 2 Sensor 1 Catalytic Conv. Catalytic Conv. Bank 1 Sensor 2 Bank 2 Sensor 2
Bank 1 is the part of the exhaust stream that includes cylinder #1. Sensor 2 is after the catalytic converter.
Bank 1 sensor 2 is the sensor after the catalytic converterBank 1 sensor 2 is the sensor after the catalytic converter
Usually bank 2 sensor 1 & 2 are right after the converter in the 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.
Bank 1 is cylinder 1 side of the motor. Sensor 2 is the back oxygen sensor (after the catalytic converter.
Bank one is the side of the engine with cylinder #1. Sensor 2 is after the catalytic converter.
Bank 1 is the oxygen sensor either screwed into ,or above the catalytic converter. Bank 2 is below the catalytic converter.