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P0412 Powertrain

Secondary Air Injection System Switching Valve A Circuit

Secondary Air Injection System Switching Valve A Circuit: an electrical fault is present in the circuit.

Affected components

  • Secondary air injection valve

Common causes

  • High likelihood: Solenoid winding open or shorted

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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