how to fix P0301 misfire code on Honda Pilot Third Generation (2016-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down if it has been running.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the ignition coil cover if applicable.
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
• Use the spark plug socket to remove the old spark plug.
• Inspect the new spark plug and apply dielectric grease to the threads.
• Install the new spark plug and tighten it to the manufacturer’s specified torque (typically around 13-16 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• If the ignition coil is faulty, remove it as described in the previous step.
• Install the new ignition coil, ensuring it is seated properly.
• Tighten the retaining bolts to the manufacturer’s specified torque (typically around 7-9 lb-ft).

4. Clean or Replace Fuel Injector

• Tools Required: Fuel injector cleaner, noid light (if testing), socket set.
• If the injector is clogged, clean it using a fuel injector cleaning kit.
• If the injector is faulty, disconnect it and remove it from the fuel rail.
• Install the new or cleaned injector, making sure it is securely connected.
• Reconnect all necessary wiring and connectors.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and let it idle for a few minutes to ensure proper operation.
• Check for any recurring error codes using the OBD-II scanner.