p0301
Moderate
Subaru · SUVs & Crossovers
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your Subaru SUVs & Crossovers 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
Connect OBD-II scanner and retrieve freeze frame data
2
Remove and inspect spark plug in cylinder 1
3
Test ignition coil 1 with multimeter
4
Perform compression test on cylinder 1
5
Check fuel injector 1 for proper operation
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
OBD-II scanner
Spark plugs
Ignition coil
Compression tester
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