Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Subaru Forester X, Automatic TransFACTORY OEM SERVICE PROCEDURE
Drive Cycle G: Notes
DTC ITEM CHART
| DTC | Item | Condition |
|---|---|---|
| *P0410 | Secondary Air Injection System | - |
| *P0411 | Secondary Air Injection System Incorrect Flow Detected | - |
| P0414 | Secondary Air Injection System Switching Valve "A" Circuit Shorted | - |
| P0417 | Secondary Air Injection System Switching Valve "B" Circuit Shorted | - |
| P1418 | Secondary Air Injection System Control "A" Circuit Shorted | - |
| *P2440 | Secondary Air Injection System Switching Valve Stuck Open (Bank 1) | - |
| *P2441 | Secondary Air Injection System Switching Valve Stuck Closed (Bank 1) | - |
| *P2442 | Secondary Air Injection System Switching Valve Stuck Open (Bank 2) | - |
| *P2443 | Secondary Air Injection System Switching Valve Stuck Closed (Bank 2) | - |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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