How Long Do Bmw 335i O2 Sensors Last. Oxygen sensor replacement estimate for bmw 335i bmw 335i oxygen sensor replacement costs 1259 on average. Just got a code last night for 2c3f dme oxygen sensor before catalytic converter.
Bmw dealer found out that bank1 sensor before an after catalytic are bad. There are some important symptoms of a damaged oxygen sensor that you should know about so you can detect the issue early on preventing other problems from occurring. The average cost for a bmw 335i oxygen sensor replacement is between 734 and 951.
Mine lead me to the crankcase vent hose.
Signal lines and im still getting the post cat 2c7c code as well. Bmw n54 o2 sensor fault codes the post catalytic converter o2 sensors are still very important even if you are running catless downpipes. If check engine light is on don t drive the car too long without getting it inspected. People said it was most likely a short in one of the o2 sensor wires.
