The signal that alerts the misfire monitor that a misfire may be occurring is provided by the: A)MAP sensor B)knock sensor. C)downstream HO₂S sensor. D)crankshaft position sensor.

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The crankshaft position sensor is crucial for detecting engine misfires. It monitors the speed of the crankshaft, and any irregularities in its rotation speed can indicate a misfire. This sensor's data is used by the engine control unit (ECU) to diagnose and address misfires, ensuring optimal engine performance.

The Signal That Alerts the Misfire Monitor That a Misfire