P0412
Secondary Air Injection System Switching Valve A Circuit
1999-2000 BMW 323i E46 2.5L I6 🇩🇪
Low SeverityPowertrain
Description
Malfunction in the AIR switching valve circuit.
Symptoms
- Check Engine Light
- AIR system not functioning
Common Causes
- Faulty switching valve
- Wiring issue
- Relay failure
Diagnostic Steps
- Test valve solenoid
- Check wiring
- Test relay
Repair Notes
Replace switching valve or repair wiring.
Related Codes
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P0412 on Other Vehicles
Common Questions
What does code P0412 mean on a 1999-2000 BMW 323i E46?
P0412 stands for "Secondary Air Injection System Switching Valve A Circuit". Malfunction in the AIR switching valve circuit.
What are the symptoms of P0412 on a BMW 323i E46?
Common symptoms of P0412 include: Check Engine Light, AIR system not functioning.
What causes P0412 on a 1999-2000 BMW 323i E46?
Common causes of P0412 include: Faulty switching valve, Wiring issue, Relay failure.