P0412
Secondary Air Injection System Switching Valve A Circuit
1999-2000 BMW 323i E46 2.5L I6
Low SeverityPowertrainGeneric (SAE)
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
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
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.