p0301
Moderate
Mitsubishi · Sedans & Cars
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your Mitsubishi Sedans & Cars 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
Replace spark plug in cylinder 1
2
Test ignition coil for cylinder 1
3
Perform compression test on cylinder 1
4
Check fuel injector operation
5
Inspect vacuum hoses
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
Compression tester
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