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

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the battery to prevent any electrical shorts.

2. Replace Spark Plug (if necessary)

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket.
• Inspect the old spark plug for wear or damage (replace if necessary).
• Install the new spark plug by hand, then torque it to manufacturer specifications (usually about 13-16 lb-ft).
• Reinstall the ignition coil, ensuring it is connected properly.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench.
• If the ignition coil was faulty, remove the ignition coil from cylinder 2 as previously described.
• Install the new ignition coil, ensuring proper seating and connection.
• Torque the retaining bolts to manufacturer specifications.

4. Inspect/Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, socket set.
• Locate the fuel injector for cylinder 2.
• Disconnect the electrical connector and fuel line (use caution as fuel may spill).
• Remove the fuel injector from the intake manifold.
• Inspect the injector for clogs; replace if necessary.
• Install the new or cleaned fuel injector, reassemble the fuel line, and reconnect the electrical connector.

5. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the engine and allow it to idle.
• Ensure the check engine light is off and monitor for any signs of misfire.