p0300
Moderate
Opel · Sedans & Hatchbacks
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your Opel Sedans & Hatchbacks 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
Check and replace spark plugs if worn
2
Inspect ignition coils for damage or corrosion
3
Test fuel pressure regulator operation
4
Check ignition timing with scanner
5
Perform compression test on 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 coil pack
Fuel filter
Air filter
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