Error code
OBD2 P0412
OBD2P0412
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Secondary Air Injection System Switching Valve 'A' Circuit.
Severity
moderateCan drive, but performance may be affected and emissions could increase.
Summary
P0412 indicates an issue with the Secondary Air Injection System Switching Valve 'A' circuit, which is part of the air injection system that helps reduce emissions.
Common Causes
- Wiring issues
- Faulty AIR solenoid A
- ECM malfunction
Fixes
- Replace the faulty AIR solenoid A or repair wiring issues.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0400Exhaust Gas Recirculation Flow
- P0401Exhaust Gas Recirculation Flow Insufficient Detected
- P0402Exhaust Gas Recirculation Flow Excessive Detected
- P0403Exhaust Gas Recirculation Control Circuit
- P0404Exhaust Gas Recirculation Control Circuit Range/Performance
- P0405Exhaust Gas Recirculation Sensor 'A' Circuit Low
- P0406Exhaust Gas Recirculation Sensor 'A' Circuit High
- P0407Exhaust Gas Recirculation Sensor 'B' Circuit Low
- P0408Exhaust Gas Recirculation Sensor 'B' Circuit High
- P0409Exhaust Gas Recirculation Sensor 'A' Circuit
- P0410Secondary Air Injection System
- P0411Secondary Air Injection System Incorrect Flow Detected