how to fix P0302 misfire code in Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before working on components.

2. Replace Spark Plug

• Tools Needed: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 2 by unscrewing the mounting bolts.
• Carefully pull the coil out and inspect the spark plug.
• Unscrew the old spark plug using a spark plug socket.
• Apply anti-seize compound on the threads of the new spark plug.
• Install the new spark plug and torque it to manufacturer specifications (typically around 13 lb-ft).
• Reinstall the ignition coil and torque the bolts to specifications.

3. Replace Ignition Coil (if needed)

• Tools Needed: Socket set, torque wrench.
• If the ignition coil was found defective, remove the coil as described in the previous step.
• Install the new ignition coil and torque the mounting bolts to specifications.
• Reconnect the electrical connector to the ignition coil.

4. Inspect or Replace Fuel Injector (if needed)

• Tools Needed: Fuel injector removal tool, socket set.
• If the fuel injector is suspected to be faulty, disconnect the electrical connector and fuel line (be cautious of fuel spillage).
• Remove the fuel injector from the rail.
• Install the new fuel injector ensuring proper seating and alignment.
• Reconnect the fuel line and electrical connector.

5. Final Checks

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.
• Check for any check engine lights or misfire codes.