This code means the car's computer has detected a problem with the system that pumps air into the exhaust system during cold starts to help the catalytic converter warm up faster and reduce emissions. "Bank 1" refers to the side of the engine containing cylinder #1.
The problem could stem from several sources, including:
* Faulty AIR pump: The pump itself might be failing.
* Clogged air lines or passages: The hoses or passages that carry the air could be blocked with debris or carbon deposits.
* Blocked or failing air injection diverter valve: This valve controls the flow of air into the system.
* Problems with the AIR pump relay or fuse: Electrical issues can prevent the pump from functioning.
* Leaks in the system: A leak in the system would cause a loss of air pressure.
* Faulty catalytic converter: In some cases, a severely clogged catalytic converter can trigger this code as it restricts airflow.
You'll need to have a mechanic diagnose the specific cause. Simply clearing the code won't fix the underlying problem. Ignoring it could lead to further engine damage and emission problems.
