how to address a misfire code P0301 in my Honda Pilot Third Generation (2016-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a spark plug socket and ratchet to remove the spark plug from cylinder 1.
• Inspect the spark plug for signs of wear (e.g., excessive carbon buildup, damaged electrodes).
• Install a new spark plug, ensuring it is gapped correctly to manufacturer's specifications (typically around 0.043 inches for most Honda engines).
• Torque the spark plug to the specified value (typically around 13 lb-ft).

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil on cylinder 1.
• Remove the retaining bolt securing the ignition coil using a socket.
• Carefully pull the ignition coil out of the spark plug well.
• Install the new ignition coil and secure it with the retaining bolt.
• Reconnect the electrical connector.

4. Inspect/Replace Fuel Injector (if necessary)

• Disconnect the fuel injector connector for cylinder 1.
• Remove the fuel rail if needed to access the injector (remove retaining bolts and carefully pull the fuel rail off).
• Remove the fuel injector from the rail or cylinder head.
• Inspect the injector for clogs or damage. Replace if necessary with a new injector.
• Reinstall the fuel rail and reconnect the fuel injector connector.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0301 code and any other stored codes.