how to fix P0301 misfire code on Honda Pilot YF4 (2023-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical issues.
• Allow the engine to cool completely before starting work.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket set to remove the spark plug from cylinder 1.
• Inspect the old spark plug for signs of wear or damage.
• Insert the new spark plug and torque it to the manufacturer's specification (typically around 13-15 lb-ft).
• Reinstall the engine cover.

3. Inspect/Replace Ignition Coil

• Remove the ignition coil from cylinder 1 by disconnecting the electrical connector and unscrewing the retaining bolts.
• Test the ignition coil using a multimeter, checking for resistance as per specifications.
• If faulty, replace with a new ignition coil and secure it in place.
• Reattach the electrical connector.

4. Test Fuel Injector

• Remove the fuel injector from cylinder 1 by disconnecting the fuel line and electrical connector, then unscrewing the retaining clips.
• Inspect the injector for clogs or damage.
• If needed, replace the fuel injector with a new one.
• Reinstall the injector and ensure all connections are secure.

5. Perform Compression Test (if necessary)

• Remove the spark plug and install the compression tester in cylinder 1.
• Crank the engine and record the reading.
• Compare the reading to manufacturer specifications; if low, further investigation is needed for possible internal engine issues.