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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Raise the vehicle if needed for better access.

2. Inspect and Replace Spark Plug

1. Remove the engine cover if applicable.
2. Use a socket wrench to remove the spark plug from cylinder 1.
3. Inspect the spark plug for wear or carbon buildup; replace if necessary.
4. Check the spark plug gap using a feeler gauge and adjust to manufacturer specifications if reusing.
5. Install the new or cleaned spark plug, tightening to the manufacturer’s torque specifications (typically 13-16 lb-ft).

3. Check and Replace Ignition Coil

1. Disconnect the electrical connector from the ignition coil for cylinder 1.
2. Remove the ignition coil by unscrewing any mounting bolts and pulling it straight out.
3. Inspect the coil for damage or corrosion; replace if faulty.
4. Install the new ignition coil and reconnect the electrical connector.

4. Test and Replace Fuel Injector (if necessary)

1. Remove the fuel rail assembly if access to the injector is required.
2. Disconnect the electrical connector from the fuel injector for cylinder 1.
3. Use a multimeter to test the injector's resistance to ensure it's functioning; replace if readings are outside of specifications.
4. Reinstall the fuel rail and ensure all connections are secure.

5. Verify Engine Compression

1. Remove the spark plug from cylinder 1 again.
2. Insert a compression gauge into the spark plug hole.
3. Crank the engine and record the compression reading; compare to specifications.
4. If compression is low, further investigation is needed for potential internal engine issues.