p0300
Moderate
SEAT · Sedans & Hatchbacks
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your SEAT 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
Read freeze frame data and misfire counters to identify which cylinders are affected
2
Inspect and replace spark plugs if worn beyond specification
3
Swap ignition coils between cylinders to determine if the misfire follows the coil
4
Perform a fuel pressure test to rule out fuel delivery issues
5
Consider a carbon cleaning service if needed
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 packs
Fuel filter
Intake valve cleaning kit
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