P0300Random/Multiple Cylinder Misfire Detected
Misfires are detected across several cylinders with no defined pattern. It can damage the catalytic converter.
This code also has a manufacturer-specific definition:
Can I keep driving? NO
STOP the vehicle in a safe place. Continuing to drive may cause serious engine damage or put your safety at risk.
Sistema Afectado
Sistema de Encendido · Bujías, bobinas y cilindros
El problema afecta la combustión en uno o más cilindros: bujías, bobinas o inyectores.
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Engine shaking
- Noticeable power loss
- Check Engine light flashing
- Vibration under acceleration
- Backfiring through the exhaust
Possible Causes
The components or conditions that trigger this code
- 1Worn spark plugs
- 2Faulty spark plug wires
- 3Failing ignition coils
- 4Dirty injectors
- 5Low compression
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Inspect and replace the spark plugs
- 2Check the high-tension wires
- 3Test the ignition coils
- 4Clean or replace the injectors
- 5Perform a compression test
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Spark plugs + coils
* Diagnosis only: $50–$150
Quick Info
Dig Deeper
Videos, images and service manuals
Have Another Code?
Look it up directly: