p0301
Easy Fix
Hyundai · Sedans
Cylinder 1 Misfire Detected
Quick Answer
Error code P0301 on your Hyundai Sedans means: Cylinder 1 Misfire Detected. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Accent SE 2022Azera Limited 2022Elantra SEL 2024Elantra Hybrid SEL 2024Elantra N 2024Elantra Limited 2024Elantra N Line 2024Elantra SE 2024Ioniq 6 Limited 2024Ioniq 6 SE Long Range 2024Ioniq 6 SE Standard Range 2024Ioniq 6 SEL 2024Sonata Limited 2024Sonata N Line 2024Sonata SE 2024Sonata SEL Plus 2024Ioniq 6 SE 2024Ioniq Hybrid Blue 2022Sonata SEL 2024Sonata Hybrid SEL 2024
Likely Causes
How to Fix It
1
Connect OBD-II scanner to read P0301 code
2
Inspect and replace spark plug in cylinder 1
3
Check ignition coil output with multimeter
4
Use fuel injector cleaner to clear carbon deposits
5
Perform compression test on cylinder 1
Pro Tip
This is a common issue that most users can resolve without specialized tools. Try the first step before moving on to more complex solutions.
Parts You May Need
Spark plug
Ignition coil
Fuel injector cleaner
Compression tester
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