how to fix misfire code P0302 in my Honda Civic 11th Generation (2022-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool before proceeding with repairs.

2. Inspect and Replace Ignition Components

1. Remove Engine Cover (if applicable):

   • Use a socket set to remove bolts securing the engine cover.
   • Carefully lift and set aside the engine cover.

2. Remove Spark Plug:

   • Use a spark plug socket to unscrew the spark plug from cylinder 2.
   • Inspect the spark plug for wear; replace if necessary.

3. Inspect and Replace Ignition Coil:

   • Disconnect the electrical connector from the ignition coil.
   • Remove the ignition coil mounting bolt using a socket wrench.
   • Pull the ignition coil out and inspect it for damage; replace if faulty.

4. Install New Spark Plug and Coil:

   • Install a new spark plug into cylinder 2 using the correct torque (typically 13-16 lb-ft).
   • Install the new ignition coil, securing it with the bolt and reconnecting the electrical connector.

3. Inspect Fuel Injector

1. Remove Fuel Injector Connector:

   • Disconnect the electrical connector from the fuel injector for cylinder 2.

2. Remove the Fuel Injector:

   • Use the appropriate tool to unclip and remove the fuel injector from its rail.
   • Inspect for clogs or damage; clean or replace as necessary.

3. Install New Fuel Injector:

   • Install the new or cleaned fuel injector, ensuring it seats properly in the rail.
   • Reconnect the electrical connector.

4. Reassemble and Test

1. Reinstall Engine Cover:

   • Place the engine cover back on and secure it with bolts.

2. Reconnect Battery:

   • Reconnect the battery terminal and ensure it is tight.

3. Start the Engine:

   • Start the engine and listen for any abnormal sounds.
   • Allow the engine to idle and monitor for check engine light.