P0411
Secondary Air Injection System Incorrect Flow
System: Emissions
Severity: medium
What does P0411 mean?
The DTC P0411 (Secondary Air Injection System Incorrect Flow) is a fault code stored by the ECU when it detects a SAI flow condition in the emissions subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P0411
- Stuck SAI valve
- Failed SAI pump
- Carbon-clogged passages
How to fix P0411
Mechanical clean or replace.
Tuning approach with DaVinci Deluxe
For P0411, DaVinci Deluxe offers the following ECU map adjustments and software solutions:
- SAI Off
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