how to resolve the P0301 misfire code in my Honda Pilot Third Generation (2016-present)

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting the electrical connector.
• Use a spark plug socket and ratchet to remove the old spark plug.
• Inspect the spark plug gap; if necessary, set it to the manufacturer’s specification (typically around 0.044 inches).
• Install the new spark plug, tightening it to the manufacturer's torque specification (usually around 13 lb-ft).
• Reconnect the ignition coil and ensure the connection is secure.

3. Inspect and Replace Ignition Coil

• If the ignition coil was previously identified as faulty, remove it as previously described.
• Install the new ignition coil onto cylinder 1, ensuring it is seated properly.
• Reconnect the electrical connector for the ignition coil.

4. Fuel Injector Cleaning or Replacement

• If the fuel injector is clogged, use a fuel injector cleaning kit to clean it, or replace it if necessary.
• Remove the fuel injector from cylinder 1 by disconnecting the fuel line (take care to relieve fuel pressure first) and unbolting it from the intake manifold.
• Install the new or cleaned fuel injector, ensuring proper sealing and connection.

5. Reconnect Battery and Start Engine

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature while observing for any abnormal sounds or issues.