What does code P0412 mean?
Malfunction detected in air switching valve A circuit
OBD-II Code
P0412 — Secondary Air Injection System Switching Valve A Circuit Malfunction
Malfunction detected in air switching valve A circuit
Common symptoms
- Incorrect airflow
- check engine light
Possible causes
- Faulty solenoid A
- damaged wiring
Initial recommendation
Inspect solenoid A and power supply.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0412 with your vehicle's actual symptoms for more complete diagnostic guidance.
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