p0300
Moderate
Genesis · Sedans
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your Genesis Sedans means: Random/Multiple Cylinder Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Scan vehicle for related misfire codes (P0301-P0308)
2
Inspect and replace spark plugs if worn
3
Test each ignition coil with multimeter
4
Check fuel pressure and volume
5
Perform fuel injector flow test
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 filter
Fuel injector cleaner
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