P0411

Secondary Air Injection System Incorrect Flow

P0411
Secondary Air Injection System Incorrect Flow
Not urgent
Ranked Possible Causes
undefined% likely
undefined% likely
undefined% likely
undefined% likely
What You'll Notice

Usually no drivability symptoms, Faint noise from pump on cold start (if pump seizing), CEL on

Cost Estimate
JobRange
Air pump replacement$150–$400
Air control valve replacement$100–$280
Hose/tube repair$40–$150
Parts You Might Need
• Secondary air injection pump
• Air control valve

These percentages are general patterns, not a diagnosis for your specific vehicle. Have a technician scan your car to confirm which component is actually failing.

Looking for other codes? Try the full lookup tool:

OBD Bay Lookup Tool