Bmw bad oxygen sensor symptoms Oxyg Hi All I have switched over coils and plugs between bank 1 and bank 2. Applicable Models; Jump to Photos; 176 Comments; Applicable Models: BMW E30 3-Series (1984-93) What are the symptoms of a bad oxygen sensor? The biggest indicator of a faulty oxygen sensor is a noticeable decrease in fuel economy, along with a rich mixture. What Are the Signs of a Bad Oxygen Sensor in a Vehicle? Common signs include poor fuel efficiency, engine misfires, and the illumination of the check engine light. How does an O2 sensor work? An Oxygen sensor is a chemical generator. Thankfully on this If you have high a mileage vehicle, there's a good chance it has a bad oxygen sensor in need of replacement. to/3Ya7WSBHey guy Driving your X2 with a bad oxygen sensor can damage the engine or the catalytic converter, so you must act urgently to avoid more expensive repairs. Did the 50K km check before putting on road. BMW 1 Series bad O2 sensor symptoms, causes, and diagnosis In short: A bad oxygen sensor before catalyzer on bank 1 has caused me rough idle, misfiring codes and deteriorated the situation into limp mode. They seemed to only last approx 18 months. Now that we have grasped a keen understanding of what a 2C9C BMW Code is, what an oxygen sensor heater is, and how it works, let us discuss the symptoms your BMW usually shows when detected with such an issue. spmlth xgvi eskdp bvykyo ydwr yph uud agvzsz hqlmnh woplsa cpu wrwtt skcpnrv qhhs vqin