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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery by removing the negative terminal.
• Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil from the spark plug.
  3. Use a spark plug socket and ratchet to remove the spark plug from cylinder 1.
  4. Inspect the spark plug for signs of wear, carbon buildup, or damage.
  5. If necessary, replace the spark plug with a new one that meets OEM specifications.
  6. Re-install the spark plug, tightening to the manufacturer's torque specification (usually around 13-15 lb-ft).
  7. Reconnect the ignition coil.

3. Test and Replace Ignition Coil (if needed)

• Sub-steps:
  1. Use a multimeter to test the ignition coil’s primary and secondary resistance.
  2. If out of specification, remove the ignition coil from cylinder 1.
  3. Install a new ignition coil, ensuring it is seated properly.
  4. Reconnect the electrical connector.

4. Check Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Use a noid light to check for injector pulse while cranking the engine.
  3. If no pulse is detected, inspect wiring and connectors for damage.
  4. If the injector is clogged, remove it and clean it or replace it if necessary.
  5. Reconnect the fuel injector connector.

5. Verify Compression

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine a few times and record the compression reading.
  4. If the reading is below the manufacturer's specifications, further engine diagnostics may be needed.