how to fix the P0302 misfire code on my Honda Accord Eleventh Generation (2023-present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the engine is cool, and disconnect the battery to avoid electrical issues.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 2 by unscrewing the retaining bolt and disconnecting the electrical connector.
  2. Remove the spark plug using a spark plug socket and ratchet.
  3. Inspect the old spark plug for wear; if necessary, replace it with a new spark plug that matches OEM specifications (e.g., NGK or Denso).
  4. Torque the new spark plug to the manufacturer's specified value (usually around 13-16 lb-ft).
  5. Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. If the ignition coil tested faulty, remove it from cylinder 2 as per the previous step.
  2. Install a new ignition coil, ensuring it matches OEM specifications.
  3. Reconnect the electrical connector and secure it with the retaining bolt.

4. Clean or Replace Fuel Injector (if necessary)

• Sub-steps:
  1. Remove the fuel rail to access the fuel injectors.
  2. If a clog is suspected, clean the injector using a fuel injector cleaning kit or replace it with a new one.
  3. Reinstall the fuel rail and ensure all connections are secure.