how to fix P0301 misfire code Honda Pilot YF4 (2023-Present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Remove the retaining bolts using a socket set.
  • Gently pull the ignition coil out.
• Remove the spark plug using a spark plug socket:
  • Use a ratchet and extension to carefully unscrew and remove the spark plug.
• Inspect the old spark plug for wear; if damaged, replace it with a new one.
• Torque the new spark plug to the manufacturer's specified value (typically around 13-15 lb-ft).

3. Replace Ignition Coil (if necessary)

• If the ignition coil was found to be faulty, install the new ignition coil:
  • Align the coil with the spark plug and push it down until it is seated.
  • Reinstall the retaining bolts and tighten to the specified torque.

4. Check Fuel Injector (if necessary)

• If the fuel injector is suspected of malfunction, replace it:
  • Remove any necessary engine covers or components for access.
  • Disconnect the fuel injector connector.
  • Remove the retaining clips and fuel line as needed.
  • Install the new fuel injector and ensure proper connection.

5. Reassemble and Reconnect

• Reconnect the negative battery terminal.
• Ensure all tools are removed from the engine bay and components are reinstalled correctly.