p0411
Moderate
Volkswagen · SUVs
Secondary Air Injection System Incorrect Flow Detected
Quick Answer
Error code P0411 on your Volkswagen SUVs means: Secondary Air Injection System Incorrect Flow Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
CAID4ID6B25N5N-LWBCRAtlas Cross Sport SE 2024Atlas Cross Sport SEL 2024Atlas Cross Sport SEL R-Line 2024Atlas SE 2024Atlas SEL 2024Atlas SEL Premium R-Line 2024ID.4 Pro 2024ID.4 Pro S 2024ID.4 Pro S Plus 2024ID.4 Standard 2024Taos S 2024Taos SE 2024Taos SEL 2024Tiguan S 2024Tiguan SE 2024Tiguan SEL 2024Tiguan SEL R-Line 2024
Likely Causes
How to Fix It
1
Verify the secondary air pump activates during cold start by listening for the pump motor
2
Check the secondary air pump relay and fuse; replace if blown or intermittent
3
Inspect all secondary air hoses and connections for cracks, disconnections, or water damage
4
Test the combi valve for proper vacuum-controlled operation
5
Remove and clean or replace the secondary air pump if the motor is seized or weak
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
Combi valve
Secondary air hoses
Air pump relay
Air pump fuse
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