how to fix Honda CR-V Fifth Generation (2017-2022) engine misfire code P0301?

Solution

1. Preparation

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

2. Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Disconnect the spark plug wire or ignition coil from cylinder 1.
• Use a spark plug socket to remove the old spark plug.
• Inspect the spark plug gap and condition; replace with a new spark plug that meets OEM specifications.
• Torque the new spark plug to the manufacturer’s specified value (typically around 13-16 lb-ft).
• Reconnect the ignition coil or spark plug wire.

3. Inspect and Replace Ignition Coil

• If the spark plug replacement does not resolve the issue, remove the ignition coil for cylinder 1.
• Check the ignition coil for cracks or damage.
• Replace the ignition coil with a new one if necessary.
• Reinstall the ignition coil and ensure it is secure.

4. Clean or Replace Fuel Injector

• If misfire persists, remove the fuel injector for cylinder 1 using appropriate tools.
• Inspect the injector for blockage or carbon buildup; clean if necessary or replace with a new injector.
• Reinstall the fuel injector, ensuring proper seating and connection.

5. Compression Test (if needed)

• If previous steps do not resolve the issue, perform a compression test on cylinder 1.
• Insert the compression gauge into the spark plug hole and crank the engine to obtain a reading.
• Compare the reading to the manufacturer’s specifications; if low, further investigation is required for potential internal engine issues.