OBD-II Code: P0300
MEDIUM-HIGH SEVERITY
Ignition
Random/Multiple Cylinder Misfire Detected
Can I Drive?
Unsafe if severe. Flashing CEL means stop immediately.
Common Causes
Spark plugs, ignition coils, fuel injectors, vacuum leaks, low compression
DIY Checks
Inspect spark plugs and ignition coils; check for vacuum leaks
Mechanic Questions to Ask
Compression test, fuel injector diagnosis, coil testing
Disclaimer: OBD code information is educational, not a professional diagnosis. The same code can have different causes depending on vehicle, mileage, maintenance history, and related codes. Always verify with a qualified mechanic.