p0300
Moderate
Kia · Sedans
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your Kia Sedans means: Random/Multiple Cylinder Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Scan vehicle for additional misfire codes on individual cylinders
2
Inspect and replace spark plugs if needed
3
Test ignition coils with multimeter
4
Check fuel pressure and injector operation
5
Perform compression test on all cylinders
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Spark plugs
Ignition coils
Fuel injector cleaner
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