What causes a secondary air injection system malfunction?
A faulty pump is generally the most frequent cause of the system failing. Faulty ground and voltage supply can also cause the pump to fail. Blocked or leaking lines can also cause the failure or malfunction of the control or combination valve, resulting in the failure of the secondary air system.
What is the code P0411?
Trouble code P0411 is a generic OBD-II DTC (digital trouble code) which indicates a problem with your vehicle’s secondary air injection system. The secondary air injection system pumps air into the engine’s exhaust stream when the engine is cold and while decelerating.
How do you fix a po410?
What repairs can fix the P0410 code?
- Replacing the air injection pump and power relay.
- Replacing O2 sensors that respond too slow as they age.
- Replacing the air injection pump intake filter clogged with debris.
How do I fix P0411 code?
What repairs can fix the P0411 code?
- Air pump replacement.
- Removing carbon buildup from secondary air system.
- Vacuum hose replacement.
- Air solenoid replacement.
- Repairing or replacing wiring harness issues.
What does Engine code P0411 mean?
Secondary Air Injection Incorrect Flow Detected
Diagnostic trouble code (DTC) P0411 stands for “Secondary Air Injection Incorrect Flow Detected.” This code warns about a potential airflow issue in the secondary air system. As was mentioned, the secondary air injection system reduces emissions by introducing fresh air into the exhaust system.
How do I fix code P0411?
How do I fix error code P2431?
What repairs can fix the P2431 code?
- Replacing the secondary air pump.
- Repairing or replacing a wiring harness.
- Resolving poor electrical connections.
What is code P0411?
Diagnostic trouble code (DTC) P0411 stands for “Secondary Air Injection Incorrect Flow Detected.” This code warns about a potential airflow issue in the secondary air system.