TorqueMech Beta
TorqueMech OBD Code Guide

P0411 - Secondary Air Injection Incorrect Flow

Secondary air injection flow not as expected.

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Code Overview

Secondary air injection flow not as expected.

Common Causes

  • Air hoses leak
  • Pump weak
  • Check valve stuck
  • Vacuum control issue

Diagnostic Steps

  1. Inspect air plumbing
  2. Verify pump output
  3. Check valves
  4. Check vacuum controls

Likely Repairs & Cost Guides

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Related OBD Codes

Browse nearby codes when systems overlap.

P0410
Secondary Air Injection System Malfunction
Open code guide →
P0412
Secondary Air Injection System Switching Valve A Circuit Malfunction
Open code guide →
P0413
Secondary Air Injection System Switching Valve A Circuit Open
Open code guide →
P0414
Secondary Air Injection System Switching Valve A Circuit Shorted
Open code guide →
P0415
Secondary Air Injection System Switching Valve B Circuit Malfunction
Open code guide →

Next Steps

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