P2197 2007 Toyota Camry Code - Oxygen Sensor Signal Stuck Lean Bank 2 Sensor 1

This code indicates that the oxygen sensor signal stuck lean on Bank 2 Sensor 1, which typically means there's a problem with the air-fuel mixture being too lean.

Common symptoms include poor fuel efficiency, rough idling, hesitation or stalling during acceleration, and the Check Engine Light being illuminated.

Potential causes include a faulty oxygen sensor, vacuum leaks, a dirty or clogged fuel injector, a malfunctioning mass airflow sensor, or issues with the fuel pressure regulator.

Diagnosis typically involves using an OBDII scanner to read the code, checking for any related codes, inspecting the oxygen sensor and its wiring, and looking for any vacuum leaks or other potential issues in the intake system.

It's not recommended to ignore a P2197 code, as it can lead to poor engine performance and potentially cause damage over time. It's best to address the underlying issue promptly.

Repair options may include replacing the oxygen sensor, fixing any vacuum leaks, cleaning or replacing the fuel injector, addressing issues with the mass airflow sensor, or repairing the fuel pressure regulator.

Yes, you can clear the code using an OBDII scanner and see if it returns. However, it's important to address the root cause to prevent the code from coming back.

While a loose gas cap can trigger some codes related to the evaporative emissions system, it's less likely to cause a P2197 code specifically related to the oxygen sensor signal.

The cost of repairs can vary depending on the underlying issue. Replacing an oxygen sensor may cost around $100-$200, while addressing more complex issues like a faulty fuel injector could be more expensive.

Oxygen sensors typically last around 60,000 to 90,000 miles, but it's a good idea to follow the manufacturer's recommendations for maintenance and have them inspected regularly to prevent issues like a P2197 code.