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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, fuel pressure gauge, vacuum gauge.
• Safety Warnings: Disconnect the battery before working on electrical systems. Allow the engine to cool before starting repairs.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Disconnect the ignition coil connector from cylinder 1.
3. Remove the ignition coil using a socket set.
4. Unscrew and remove the spark plug using a spark plug socket.
5. Inspect the old spark plug for wear and carbon buildup.
6. Install a new spark plug (use OEM recommended type) and torque to specification (usually around 13-16 lb-ft).
7. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if necessary)

1. If the ignition coil was found faulty during diagnostics, remove it as described above.
2. Install the new ignition coil and ensure it is properly seated.
3. Reconnect the ignition coil connector.

4. Inspect and Clean Fuel Injector

1. Remove the fuel injector connector from cylinder 1.
2. Use a suitable tool to remove the fuel injector from its rail (may require removing the intake manifold).
3. Inspect the fuel injector for clogs or damage.
4. Clean the fuel injector using a fuel injector cleaning kit or replace it if necessary.
5. Reinstall the fuel injector and reconnect its connector.

5. Compression Test (if necessary)

1. Remove the spark plug from cylinder 1.
2. Insert the compression tester into the spark plug hole.
3. Crank the engine several times to obtain a reading.
4. Compare the reading to manufacturer specifications. If low, further engine diagnostics may be required.