MasterTuning Fault code dictionary (DTC)

P2440 — Secondary Air Injection System Switching Valve Stuck Open Bank 1

Severity: Informational Can you drive? Yes, no known limitation Make: All makes (OBD-II standard)
MeaningSecondary Air Injection System Switching Valve Stuck Open Bank 1.
FamilyPowertrain (P)

Frequently asked questions

What does code P2440 mean?

Secondary Air Injection System Switching Valve Stuck Open Bank 1. Secondary Air Injection System Switching Valve Stuck Open Bank 1.

Can I keep driving with code P2440 active?

Yes, no known limitation

How do you fix code P2440?

Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.

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