2004 BMW 330Ci Fault Code P2240: What Does It Mean and How to Fix?
This morning, the engine warning light activated on my 2004 BMW 330Ci. Later that evening, I used an Actron OBD2 scanner to retrieve the fault code, which displayed P2240. I successfully reset the code and will monitor whether it returns tomorrow. However, I'm still seeking a clear explanation of what this specific code indicates. Can anyone provide insight into the meaning or potential causes of BMW 330Ci P2240? Any technical details or troubleshooting steps would be greatly appreciated.
Fault Code P2240 in a 2004 BMW 330Ci indicates an issue with the Oxygen Sensor Bank 2, Sensor 1 — specifically, a problem with the positive current circuit or open circuit. This could be due to sensor failure, wiring damage, or a loose connection. It's important to inspect the sensor and its associated wiring for corrosion or physical damage when diagnosing.