P0410 Secondary Air Injection System Malfunction
What does P0410 mean?
P0410 — Secondary Air Injection System Malfunction. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects secondary air injection system malfunction. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0410
- Failed secondary air injection pump
- Blocked or leaking air injection check valve
- Blown air pump fuse or relay
- Open or shorted pump wiring
- Cracked or disconnected air injection hoses
How to fix P0410
- Listen for the secondary air pump on cold start
- Check the air pump fuse and relay
- Inspect hoses and the check valve for leaks or blockage
- Verify pump operation and pressure output
- Replace the pump or valve and reconfirm cold-start operation