how to fix P0301 misfire code on my Honda CR-V Sixth Generation (2023-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before beginning work.

2. Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Disconnect the ignition coil connector from the spark plug.
• Remove the ignition coil using a socket wrench.
• Remove the old spark plug using a spark plug socket and ratchet.
• Check the gap on the new spark plug and adjust it to manufacturer specifications (typically around 0.044 inches for Honda).
• Install the new spark plug and tighten it to the manufacturer’s torque specification (usually around 13 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Test and Replace Ignition Coil (if necessary)

• If the misfire persists, test the ignition coil using a multimeter to ensure it is functioning correctly (check resistance specifications).
• If faulty, replace the ignition coil with a new one.
• Reinstall the ignition coil and reconnect the connector.

4. Inspect and Clean Fuel Injector

• If the ignition components are functioning correctly, remove the fuel injector from cylinder 1.
• Clean the injector using a fuel injector cleaner or replace it if it is defective.
• Reinstall the fuel injector and ensure all connections are secure.

5. Compression Test (if necessary)

• Remove the spark plug from cylinder 1.
• Insert a compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare to manufacturer specifications (usually around 180-210 psi). If low, further investigation into engine internals may be necessary.