p0301
Moderate
Lexus · Sedans
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your Lexus Sedans 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
Perform compression test on cylinder 1
2
Inspect and replace spark plug
3
Test ignition coil on cylinder 1
4
Check fuel injector function
5
Check engine timing
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 cleaner
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