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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal.
• Ensure the engine is cool before starting work.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2.
• Use a spark plug socket to remove the old spark plug.
• Inspect the new spark plug's gap and adjust if necessary.
• Install the new spark plug and torque to the manufacturer's specification (typically around 13 ft-lbs).
• Reinstall the ignition coil and connect the wiring.

3. Inspect and Replace Ignition Coil (if needed)

• If the ignition coil shows signs of damage or high resistance, remove it from cylinder 2.
• Install a new ignition coil, ensuring that it is seated properly.
• Reconnect all wiring connections securely.

4. Clean or Replace Fuel Injector (if needed)

• Remove the fuel injector from cylinder 2 using an injector puller if necessary.
• Inspect the injector for clogs; clean it with an appropriate solvent if it appears dirty.
• If cleaning does not resolve the issue, replace with a new fuel injector.
• Reinstall the injector and ensure proper sealing.

5. Compression Test (if needed)

• If previous steps do not resolve the misfire, perform a compression test on cylinder 2.
• If compression is low, further diagnosis for potential mechanical issues (e.g., valve problems, head gasket) may be necessary.