OBD-II Generic Error Code P2241: How to Fix It

Q: What does P2241 mean on my car?

P2241 means the engine control module (ECM) has detected that the pumping current from the heated oxygen sensor on Bank 2, Sensor 1 is lower than expected. This is a wide-band or air-fuel ratio sensor located before the catalytic converter on the Bank 2 side of the engine. It is used to precisely measure exhaust oxygen content so the ECM can fine-tune the fuel mixture.

Q: Can I drive my car with a P2241 code?

In most cases, yes — the vehicle will usually still run with a P2241 code, but you may notice worse fuel economy, a rough idle, or increased emissions. Driving long distances with this fault can cause the engine to run rich or lean, potentially damaging the catalytic converter over time. It is best to diagnose and repair the issue as soon as possible.

Q: How much does it cost to fix a P2241 code?

If only the oxygen sensor needs replacement, parts typically cost between $50 and $250 depending on the vehicle make and model, with labor adding $50 to $150 at a shop. If there are wiring faults or underlying engine issues such as a head gasket leak, costs can rise significantly. Doing the sensor replacement yourself can save the labor cost entirely.

Q: Is P2241 the same as a bad oxygen sensor?

P2241 is most commonly caused by a failed Bank 2 Sensor 1 oxygen sensor, but not always. Wiring faults (broken wires, corroded connectors, poor ground), exhaust leaks near the sensor, engine oil or coolant contamination of the sensor, or in rare cases a faulty ECM can all trigger this code. Always test the wiring and circuit before assuming the sensor itself is bad.

Q: Which side is Bank 2 on my engine?

Bank 2 is the side of the engine that does NOT contain cylinder number 1. On a V6 or V8 engine, this is typically the passenger side on most front-wheel-drive vehicles and many rear-wheel-drive vehicles, but it varies by manufacturer. Consult your vehicle's service manual or a reliable online resource specific to your make and model to confirm which side is Bank 2 before replacing any parts.

Abstract

Error code P2241 indicates that the heated oxygen sensor (HO2S) on Bank 2, Sensor 1 is producing a pumping current that is lower than expected. This sensor is a wide-band or air-fuel ratio (AFR) sensor located upstream of the catalytic converter on the side of the engine that does NOT contain cylinder #1. A faulty or under-performing sensor in this position can cause poor fuel economy, rough running, and failed emissions tests, so it should be addressed promptly.