p0411
Moderate
Skoda · Sedans & Hatchbacks
Secondary Air Injection System Incorrect Flow Detected
Quick Answer
Error code P0411 on your Skoda 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
  1. Air pump malfunction
  2. Air check valve failure
  3. Clogged air filter in SAI system
  4. Faulty secondary air solenoid
  5. Air hose disconnected or damaged
How to Fix It
1
Inspect secondary air injection pump operation
2
Test air check valve for proper flow direction
3
Verify solenoid valve activation with multimeter
4
Check all SAI system hoses for damage or disconnection
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
Air pump assembly
Check valve
Solenoid valve
Hoses and connectors
Related Error Codes
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