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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench.
• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 1 (refer to the service manual for exact location).
• Use a spark plug socket to remove the old spark plug.
• Inspect the spark plug socket for debris. Clean if necessary.
• Install the new spark plug and tighten to the manufacturer’s specified torque (typically around 13-16 lb-ft).
• Reinstall the engine cover.

3. Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• Locate the ignition coil for cylinder 1.
• Disconnect the electrical connector from the ignition coil.
• Remove the bolts securing the ignition coil and take it out.
• Install the new ignition coil and secure it with bolts to the manufacturer’s specified torque.
• Reconnect the electrical connector.

4. Inspect/Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, socket set.
• Disconnect the battery again before working on fuel components.
• Remove the intake manifold if required to access the fuel injector.
• Disconnect the electrical connector and fuel line from the injector.
• Remove the retaining clips and carefully pull out the injector.
• Inspect for blockages; replace if defective or clogged.
• Install the new fuel injector, ensuring proper sealing.
• Reassemble the intake manifold and reconnect the battery.