P0410 Code: Secondary Air Injection System Malfunction
🟠 Moderate severity · drivable
Drivable — this affects cold-start emissions, not drivability. Fix it before your next emissions test.
What P0410 means
The secondary air injection system, which pumps fresh air into the exhaust during cold start to help the catalytic converter warm up faster, isn't working correctly.
Symptoms
- Check engine light is on
- Possible failed emissions test
- Possible noisy air pump
- No driving symptoms
Common causes
- most common: Faulty secondary air pump
- common: Faulty check valves or leaking hoses
- less common: Blown fuse or faulty relay
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Check the air pump fuse and relay | Yes | $0–60 |
| Replace leaking hoses or faulty check valves | Yes | $50–150 |
| Replace the secondary air pump | Mechanic | $200–500 |
Frequently asked questions
Can I drive with a P0410 code?
Yes. It only affects cold-start emissions, not drivability. Fix it before your next emissions test.
What is the most common cause of P0410?
A faulty secondary air pump or leaking hoses and check valves.
How much does it cost to fix a P0410?
A new air pump is $200–$500; hoses and valves are usually cheaper.
Related codes
P0411
P0411 Code: Secondary Air Injection System Incorrect Flow Detected
P0412P0412 Code: Secondary Air Injection (AIR) Switching Valve A Circuit Malfunction
P0418P0418 Code: Secondary Air Injection System Relay A Circuit Malfunction
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.