p0411
Moderate
SEAT · Sedans & Hatchbacks
Secondary Air Injection System Incorrect Flow Detected
Quick Answer
Error code P0411 on your SEAT Sedans & Hatchbacks means: Secondary Air Injection System Incorrect Flow Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Activate the secondary air pump using a diagnostic scan tool and listen for pump operation
2
Check the secondary air pump relay and fuse for proper function
3
Inspect the air valve for carbon buildup or mechanical failure
4
Test the secondary air hoses for blockages or leaks
5
Verify airflow is reaching the exhaust manifold by checking the valve passages
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Secondary air injection pump
Secondary air injection valve
Secondary air hoses
Secondary air pump relay
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