P0300
Sistema
Powertrain (Engine)
Escáner necesario
Basic OBD2 code reader (engine codes, live data, smog readiness)

Random/Multiple Cylinder Misfire Detected

Understand P0300, common causes, and the right FOXWELL scanner to diagnose it.

The ECU detected misfires in more than one cylinder or could not isolate the misfire to a single cylinder. This often causes rough idle, hesitation, and a flashing check engine light.

Síntomas habituales

  • Rough idle
  • Loss of power under acceleration
  • Engine vibration
  • Flashing MIL (stop driving if flashing)

Causas típicas

  • Worn spark plugs or ignition coils
  • Vacuum leak
  • Low fuel pressure
  • Clogged fuel injectors
  • Low compression in one or more cylinders

¿Qué escáner necesita?

Basic OBD2 code reader (engine codes, live data, smog readiness)

Use datos en vivo y freeze frame antes de cambiar piezas. Códigos ABS, SRS y U suelen requerir un escáner de todos los sistemas.

Consejos de diagnóstico

  • Registre el freeze frame cuando se active el código
  • Borre el código solo tras corregir la causa
  • Revise códigos pendientes relacionados
  • Verifique que la batería esté por encima de 12,4 V antes de sospechar sensores

Escáneres FOXWELL recomendados

Preguntas frecuentes

Can I diagnose P0300 with a basic code reader?
Yes — P0300 is typically accessible with a basic OBD2 code reader like the FOXWELL NT201 or NT301. Live data helps confirm the repair.
Is it safe to drive with P0300?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.