Random or multiple cylinder misfire detected

What a general misfire result can mean, and what to record before diagnosis.

WHAT IT GENERALLY REPORTS

A starting point, not a parts list.

The engine computer detected misfire activity on more than one cylinder, or could not consistently identify a single cylinder. The code describes what the monitor observed; it does not identify the failed part.

Common symptoms

The check-engine light may be on or may flash while a misfire is active.
The engine may run unevenly, hesitate, shake, or feel down on power.
Some vehicles show the code before the driver notices a change.

Possible causes

An ignition, fuel-delivery, air-measurement, or engine-mechanical issue.
A condition that affects more than one cylinder, or more than one issue at once.
A temporary operating condition; the stored code and related data help put it in context.

Safe initial checks

Record the exact code, any companion codes, and scan-tool snapshot data before clearing anything.
Note when the engine runs differently, such as at startup, at idle, or while accelerating.
If the light is flashing or the engine is running very roughly, pull over safely and arrange professional help rather than continuing to drive.

When to get professional help

Get prompt help if the warning light flashes, power drops sharply, or the vehicle feels unsafe.
A technician can use vehicle-specific service information and test results to distinguish among ignition, fuel, air, and mechanical causes.