how to fix P0301 misfire code on Honda Pilot YF3 (2016-2022)?

Solution

1. Preparation

• Gather the necessary tools and parts.
• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Allow the engine to cool completely before beginning work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, anti-seize compound.
• Remove the ignition coil by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
  • Inspect the spark plug for wear and carbon buildup; replace if necessary.
  • Apply anti-seize compound to the threads of the new spark plug.
• Install the new spark plug and torque it to the manufacturer’s specifications (typically around 13 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil (if necessary)

• Tools Required: Socket set, multimeter.
• Using a multimeter, check the ignition coil’s primary and secondary resistances according to the specifications provided in the service manual.
• If the ignition coil is faulty, remove it and replace it with a new one.
• Reinstall the new ignition coil and ensure it is securely connected.

4. Check Fuel Injector Operation

• Tools Required: Noid light or fuel injector tester.
• Disconnect the fuel injector connector for cylinder 1.
• Connect the noid light to the injector connector and crank the engine to check for a pulse.
  • If there is no pulse, inspect wiring and connectors for damage or corrosion; repair or replace as necessary.
  • If the injector is faulty, replace it with a new one.