p0300
Moderate
SEAT · SUVs & Crossovers
Random/Multiple Cylinder Misfire Detected
Quick Answer
Error code P0300 on your SEAT SUVs & Crossovers means: Random/Multiple Cylinder Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
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Likely Causes
  1. Worn or fouled spark plugs
  2. Failing ignition coil packs
  3. Vacuum leaks causing lean misfires
  4. Low fuel pressure from a weak fuel pump or clogged filter
  5. Carbon buildup on intake valves
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
Related Error Codes
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