OBD-II Generic Error Code P2272: How to Fix It

Q: What does OBD-II code P2272 mean?

P2272 means the downstream oxygen sensor on Bank 2, Sensor 2 is reporting a lean air-fuel mixture that is stuck (not changing). This could be due to a faulty sensor, exhaust leak, or fuel system problem.

Q: Can I drive with a P2272 code?

You can drive short distances, but it may cause poor fuel economy, increased emissions, and potential damage to the catalytic converter. It's best to diagnose and fix it soon.

Q: How do I clear the P2272 code?

After repairing the issue, you can clear the code using an OBD-II scanner. Alternatively, disconnecting the battery for a few minutes may clear it, but driving several drive cycles is often needed for the monitor to reset.

Q: What is Bank 2 Sensor 2?

Bank 2 refers to the side of the engine that does not contain cylinder #1. Sensor 2 is the downstream oxygen sensor located after the catalytic converter, used to monitor converter efficiency.

Q: How much does it cost to fix P2272?

The cost varies. A new oxygen sensor costs $30-$100, plus labor if a professional installs it (total $100-$250). If an exhaust leak or other issue is found, costs may be higher.

Abstract

Error code P2272 indicates that the downstream oxygen sensor (HO2S) on Bank 2, Sensor 2 is reporting a lean condition that is stuck or not changing. This could be caused by a faulty sensor, exhaust leak, or fuel system issue. Ignoring it may lead to reduced fuel economy and increased emissions.