how to fix P0302 code Honda Accord 8th Generation (2008-2012)

Solution

1. Preparation

• Gather tools and gather the necessary parts.
• Disconnect the negative battery terminal to ensure safety.

2. Replace Spark Plug in Cylinder 2

• Remove the engine cover if applicable.
• Identify and remove the spark plug wire or ignition coil for cylinder 2.
• Use a spark plug socket to remove the old spark plug.
• Inspect the spark plug socket for debris.
• Install the new spark plug, ensuring the gap is correct.
• Torque the spark plug to the manufacturer's specification (typically around 13 lb-ft).

3. Check and Replace Ignition Coil

• If the spark plug replacement does not resolve the issue, check the ignition coil.
• Remove the ignition coil for cylinder 2.
• Test the coil with a multimeter (check primary and secondary resistance).
• If faulty, replace with a new ignition coil.
• Reconnect the wiring harness and ensure it is secure.

4. Inspect and Clean Fuel Injector

• If the ignition coil is functioning properly, check the fuel injector.
• Remove the fuel injector from cylinder 2.
• Inspect for clogs or dirt; clean or replace if necessary.
• Reinstall the fuel injector, ensuring a secure fit and proper connection.

5. Check Compression

• If misfire persists, perform a compression test on cylinder 2.
• Compare the readings to the manufacturer's specifications.
• If low, diagnose further for potential issues like valve or piston problems.