P0411 – Secondary Air Injection System Incorrect Flow Detected

Meaning:

When the flow coming from the secondary air injection system is out of the range specified by PCM, the P0411 happens
The P0411 is triggered when the flow coming from the secondary air injection system is out of the range specified by PCM

The flow coming from the secondary air injection system is out of the range specified by PCM.

Main Symptoms:

Possible Causes:

Diagnostic Steps:

  • Visually inspect air injection system and check for broken components, damaged hoses and excess carbon
  • Reset the code and do a test drive

Read More: OBD2 Codes List: Meaning, Fixes, and Free Download