An OBD II PCM is able to detect engine misfire by monitoring:
A) engine vacuum
B) engine RPM
C) engine load
D) vehicle speed

Name: An OBD II PCM is able to detect engine misfire by monitoring: A) engine vacuum B) engine RPM C) engine load D) vehicle speed
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Question

Quizplus · Accepted Answer

The OBD II Powertrain Control Module (PCM) can detect engine misfire by monitoring engine RPM. Variations in the rotational speed of the engine can indicate a misfire, as each misfire typically results in a slight decrease in engine speed.

An OBD II PCM Is Able to Detect Engine Misfire