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reddit.com/r/MechanicAdvice/comments/ci6r17

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Reddit thread: 2016 Smart ForTwo P2440

reddit.com/r/MechanicAdvice/comments/ci6r17 · p. 1 · Applies to: 453

Source: r/MechanicAdvice (score 1, 6 comments) Topic: Secondary Air Injection System Models discussed: 453 Solution status: unclear

Problem: 2016 Smart ForTwo throwing P2440 error code for Secondary Air Injection System Switching Valve Stuck Open; user needs help identifying the exact OEM part number.

Solution: A commenter provided a link to a Smart car forum thread containing the part number in the first post, along with additional related information about the P2440 issue.

Key facts: - Error code P2440 indicates Secondary Air Injection System Switching Valve Stuck Open - Vehicle is 2016 Smart ForTwo Prime with 0.9L 3-cylinder engine and manual transmission - Solution involved locating part number on Smart car forum (smartcarofamerica.com) - User was attempting to identify part on Mercedes-Benz Smart parts website