Unlocking the Power of Oxygen Sensor Bank 1 for Optimal Engine Health

I'm convinced bank 1 sensor 2 is 226A0-4LA0A. I already ordered an Oxygen Sensor tool as its impossible to remove it with a regular wrench. Sensor 1 is actually right after the exhaust manifold. Sensor 2 is after the flex pipe, behind the cat. Trust me. Already changed mine. Right: 1 is before the ... Genuine BMW O2 Sensor to keep your emissions system running smoothly. Special Application Notes: BMW Part Number 11787848486 / 11-78-7-848-486 Its in a very not convenient spot I must say. I had to replace mine last January. Its just down-stream from the exhaust manifold on the back ... I am getting a code for a bad 02 sensor. Is the bank 1 sensor 2 on the rear manifold? Has anyone changed this out? Is it a pain to get to? Primary O2 Sensor (Bank 1, Sensor 1) — This sensor is located in the exhaust manifold or the exhaust pipe just before the catalytic converter. I installed a new denso sensor but am still receiving no voltage readings and torque pro doesn't show that the sensor is available. Is this normal? Usually O2 sensors are refered to as Bank 1 and Bank 2. Bank 1 would be the front sensor before the cat and Bank 2 would be the sensor after the cat. The Bank 1 Fuel Trim Rich is setting because the post cat, or downstream, O2 sensor thinks there's too much fuel in the system. Changing the ... A properly functioning oxygen sensor will show a rapidly fluctuating output voltage between approximately 0.1 and 1.0 volts.