All codes
P0410Emissions System
Secondary Air Injection System Malfunction
Diagnose P0410 secondary air injection (AIR) system code - common causes and how to fix it.
What you may notice
Symptoms
- 01Check engine light on
- 02Usually no noticeable drivability symptoms
- 03Failed emissions/smog test
- 04Possible unusual noise from the AIR pump on startup
Where to look first
Common causes
- 01Failed secondary air injection pump
- 02Stuck or failed AIR control valve
- 03Damaged or disconnected AIR system hoses
- 04Blown fuse or relay for the AIR pump
- 05Corroded wiring/connector
Step by step
What to check and repair
- 01Inspect AIR system hoses for cracks or disconnection
- 02Check the AIR pump fuse and relay
- 03Listen for the AIR pump running briefly after a cold start
- 04Test and replace the AIR control valve if stuck
- 05Replace the AIR pump if it fails to run
What Does P0410 Mean?
P0410 means the ECM detected a fault in the secondary air injection (AIR) system, which pumps extra air into the exhaust briefly after a cold start to help the catalytic converter warm up faster and reduce emissions.
Mostly An Emissions Concern
This system typically only runs for a short time after a cold start, so P0410 often doesn't cause noticeable drivability symptoms - but it will usually cause a failed emissions test.
How AI4Car Helps
AI4Car can help confirm whether the AIR pump activates as expected right after a cold start, which is the easiest way to narrow down a pump, valve, or wiring fault.