First of all, remove cabin air. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. Oxygen sensors should be replaced every 100,000 miles
How to Remove and Replace an O2 Sensor Bank 1 Sensor 2 ( P2271 O2
In a perfect world that would be it, wait until a specified mileage and replace the sensor
However, these sensors fail prematurely, set off.
A complete guide to diagnosing and replacing failing oxygen sensors on bmw 3 series, 5 series, x3, x5, z3, and z4 models that share common m52 and m54 engines. Check out how to change your o2 sensors specifically the post cat sensor 2 for both bank 1 and bank 2 on the m54 engine Confusing these two locations is the most common reason for replacing the wrong oxygen (o2) sensor when dealing with check engine codes like p0171, p0174, or o2 heater circuit failures. Once you've wiggled the heat shield back, you can see the pair of o2 sensors (bank 1, sensors 1 and 2) sticking out of the exhaust pipes where the three sections of pipe merge into one.
A bad oxygen sensor before catalyzer on bank 1 has caused me rough idle, misfiring codes and deteriorated the situation into limp mode I replaced the o2 sensors before cat on. I use different color tape. Remove the headers with the o2's installed, and then transfer them to the new headers/cats one at a time
After install, plug them in to the corresponding marked.
In this video i go over all the steps needed to replace both oxygen sensors on the bmw e46 platform especially for the 316i and 318i models with the m43b19tu engine.
