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

Solution

1. Preparation

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

2. Replace Spark Plug

1. Remove the engine cover (if applicable) using a socket set.
2. Disconnect the ignition coil connector for cylinder 2.
3. Remove the ignition coil using a socket set.
4. Extract the spark plug using a spark plug socket and ratchet.
5. Inspect and replace the spark plug with a new one, ensuring the gap is set to manufacturer specifications (typically around 0.043 inches).
6. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if necessary)

1. If the ignition coil shows signs of damage or is faulty, replace it with a new unit.
2. Reinstall the ignition coil and reconnect the ignition connector.

4. Inspect and Clean Fuel Injector

1. If the problem persists, remove the fuel injector for cylinder 2.
2. Inspect for clogs or damage; clean using an appropriate fuel injector cleaner or replace it if necessary.
3. Reinstall the fuel injector ensuring it is seated properly.

5. Reassemble and Test

1. Reconnect the battery.
2. Start the engine and allow it to reach operating temperature.
3. Use an OBD-II scanner to clear the codes and monitor for any reoccurrence of the P0302 code.