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What Does P0301 Mean
Quick definition of the OBD‑II code
How the ECU detects cylinder 1 misfire
How to Diagnose and Fix It
Step 1: Scan and confirm the code
Step 2: Inspect spark plug, ignition coil, and injector
Step 3: Test vacuum and EGR systems
Step 4: Clear the code and verify operation
Common Mistakes & Safety Warnings
Misdiagnosis pitfalls
Safety precautions when working on the engine
FAQs
Can I drive with P0301?
How often should I clear the code?
What are the most common causes of P0301?
