P0415
Secondary Air Injection System Switching Valve B Circuit
Secondary Air Injection System Switching Valve B Circuit: an electrical fault is present in the circuit.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Solenoid faultCommon
Parts involved
- Secondary Air Injection Valve
P0415 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.