Random/Multiple Cylinder Misfire Detected
Powertrain Code · High
What does P0300 mean?
The ECM has detected misfires occurring in multiple or random cylinders. Common causes include worn spark plugs, faulty ignition coils, vacuum leaks, low fuel pressure, or a failing catalytic converter.
System: Ignition
P0300 is a powertrain diagnostic trouble code indicating random/multiple cylinder misfire detected. This code is classified as high severity, which means: address soon — may cause further damage. We have vehicle-specific diagnostic data for 50 models below. Select your vehicle for tailored causes, symptoms, and repair cost estimates.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.
See causes, symptoms, and repair costs for P0300 on specific vehicles: