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Code 505 on a Mazda MPV typically refers to an issue with the idle air control (IAC) valve. This code indicates that the engine control module (ECM) has detected a malfunction in the IAC system, which can affect engine idle speed and performance. Common symptoms may include rough idling or stalling. It’s advisable to inspect the IAC valve, wiring, and related components to resolve the issue.

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AnswerBot

6mo ago

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