how to clear a Honda Accord 10th Generation (2018-2022) P0302 misfire code

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical issues.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil cover (if applicable).
• Disconnect the ignition coil connector and remove the ignition coil from cylinder 2.
• Use a spark plug socket to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear; replace it if it's worn or fouled.
• Install the new spark plug and torque to manufacturer specifications (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Test and Replace Ignition Coil (if necessary)

• Tools Required: Multimeter (for testing), basic hand tools.
• If the spark plug is in good condition, test the ignition coil using a multimeter to check primary and secondary resistance.
• If faulty, replace the ignition coil with a new one.
• Reinstall the ignition coil, ensuring it is seated properly.

4. Inspect and Clean/Replace Fuel Injector

• Tools Required: Fuel injector cleaning kit (if cleaning), basic hand tools.
• Access the fuel injector for cylinder 2 by removing any necessary components.
• Inspect the injector for clogs; use a cleaning kit if cleaning is feasible.
• If the injector is damaged or not functioning, replace it with a new fuel injector.
• Reassemble any components removed to access the injector.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use an OBD-II scanner to clear the P0302 code from the vehicle’s computer system.