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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil cover if applicable.
• Remove the spark plug wire or ignition coil from cylinder 1.
• Use a spark plug socket to unscrew and remove the spark plug.
• Inspect the spark plug for wear (e.g., carbon deposits, electrode wear).
• If damaged, replace with a new spark plug, ensuring it meets OEM specifications.
• Torque the new spark plug to the manufacturer's recommended specification (typically around 13-16 lb-ft).

3. Check and Replace Ignition Coil (if necessary)

• Tools Required: Ratchet, socket set.
• If the spark plug appears fine, test the ignition coil using an ohmmeter. If it fails the test, replace it.
• Remove the ignition coil by unscrewing the bolts or clips securing it.
• Install the new ignition coil by reversing the removal steps, ensuring it is seated properly.

4. Inspect and Test Fuel Injector

• Tools Required: Injector tester or multimeter.
• Disconnect the fuel injector connector from cylinder 1.
• Use an injector tester to check the injector's pulse and spray pattern. If it fails, replace the fuel injector.
• Install the new fuel injector and reconnect the wiring harness.

5. Reassemble and Reconnect

• Reconnect the spark plug wire or ignition coil.
• Reinstall any covers or components removed during the process.
• Reconnect the negative battery terminal.