Random or multiple-cylinder misfire detected

What the code means

The powertrain controller detected combustion-speed variation across multiple cylinders.

Severity and driving

Urgent if the check-engine light flashes

Plausible causes

Ignition fault
Air/fuel mixture problem
Fuel delivery problem
Mechanical compression problem

Next checks

Note whether the warning light flashes
Record related cylinder-specific codes and freeze-frame data
Do not continue driving with a flashing light

Source and boundary

Code structure follows SAE J2012. Manufacturer-specific definitions, pinpoint tests, wiring, torque, fluids, and repair procedures require authoritative information for the exact vehicle.

SAE J2012 Diagnostic Trouble Code DefinitionsReviewed 2026-08-13

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