how to fix P0301 code in Honda Accord Eleventh Generation (2023-present)

Solution

1. Preparation

• Gather tools and materials.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before working on ignition components.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 using a socket set.
• Remove the spark plug using a spark plug socket. Inspect for damage or excessive wear.
• If needed, replace with a new spark plug that meets OEM specifications (typically NGK or Denso for Honda).
• Torque the new spark plug to the manufacturer's specification (usually around 13 lb-ft).

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, inspect the ignition coil for cracks or damage.
• If necessary, replace the ignition coil with a new one.
• Reinstall the coil, ensuring it is securely seated.

4. Fuel Injector Testing and Replacement

• If the ignition components are functioning properly, check the fuel injector using a multimeter to ensure it's receiving the correct voltage.
• If the injector is malfunctioning, remove it from the fuel rail.
• Replace with a new injector that meets OEM standards.
• Reinstall the fuel rail and ensure all connections are secure.

5. Reassemble and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Check for any leaks or irregular noises.