Oxygen Sensor Bank 1 Sensor 2 Diagnostics Pinpointing Issues with Precision

There are two O2 sensors, an upstream (on the rear exhaust manifold) and a downstream (on the side of the catalytic converter). This is BMW parts item 1788058647 (11-78-8-058-647), described as Genuine BMW Post-Cat Oxygen Sensor (Bank 1, Sensor 2) for S55 engine on F97 X3M (2020+), ... Got a CEL P0137 - Bank 1 Sensor 2 (Circuit Low Voltage) For the 2.4L engine, there's only two O2 sensors right? Do I change the one inside the catalytic ... Locating Oxygen Sensors: Identifying Bank 1 Sensor 1 (Upstream) and Bank 2 Sensor 2 (Downstream) 28K views 1 year ago Bank 1 sensor 2 is located downstream, usually behind the catalytic converter. Regardless of the bank, all oxygen sensors use the same naming pattern. Bank 1 is always on cylinder 1 – 3 – 5 – 7 – 9 – 11 and bank 2 is always on cylinder 2 – 4 – 6 – 8 – 10 – 12. What is Sensor 1 & 2? The sensor number is telling ... You should be able to get at those from the top. Open the hood and look down at the exhaust manifold. Bank 1 is the forward one, Bank 2 is ... Bank 1, Sensor 2 is typically found in the exhaust pipe downstream of the catalytic converter. It's positioned some distance away from the ... Take it to a local auto parts store and have the code scanned again (for free). The I6 only has 1 bank. Sensor 1 would be the front and sensor 2 would be the ... I want to say it's the 02 sensor on the drivers side the 2ed one down. Click to expand... Bank 1 is passenger side Sensor 2 is after the cat.