p0301
Moderate
SEAT · Sedans & Hatchbacks
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your SEAT Sedans & Hatchbacks means: Cylinder 1 Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Swap the ignition coil from cylinder 1 with another cylinder and retest
2
Inspect and replace spark plug in cylinder 1 if worn or fouled
3
Check compression in cylinder 1 using a compression tester
4
Test fuel injector 1 for proper spray pattern and electrical function
5
Perform a cylinder 1 leak-down test if compression is low
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 plug
Ignition coil
Fuel injector
Valve cover gasket
Engine oil (if servicing)
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