how to fix P0301 misfire code in my Honda Pilot YF3 (2016-2022)

Solution

1. Preparation

• Gather all necessary tools and parts (see Tools Required and Parts Required sections below).
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool down completely.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 1 by unscrewing the bolts and disconnecting the electrical connector.
  2. Unscrew and remove the spark plug using a spark plug socket.
  3. Inspect the spark plug for wear or carbon buildup. Replace it with a new spark plug if necessary.
  4. Set the gap of the new spark plug according to manufacturer specifications (typically around 0.043 inches for Honda).
  5. Install the new spark plug and torque it to the manufacturer’s specifications (around 13 lb-ft).
  6. Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. If the ignition coil shows signs of damage, remove the faulty coil from cylinder 1.
  2. Install the new ignition coil, ensuring it is seated correctly on the spark plug.
  3. Reconnect the electrical connector securely.

4. Inspect and Clean Fuel Injector (if necessary)

• Sub-steps:
  1. Remove the fuel rail (if needed) to access the fuel injector for cylinder 1.
  2. Use a fuel injector cleaning kit to clean the injector or replace it if it is malfunctioning.
  3. Reinstall the fuel injector and ensure it is properly connected.