what is the cause of the P0302 code in my Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 2 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for signs of wear or fouling.
• If damaged, replace with a new spark plug, ensuring it is gapped correctly to manufacturer specifications (typically around 0.043 inches for Honda).
• Reinstall the spark plug and torque it to the manufacturer’s specification (usually around 13 lb-ft).

3. Check and Replace Ignition Coil

• Tools Required: Socket set.
• Remove the ignition coil from cylinder 2 (if the spark plug replacement did not resolve the issue).
• Test the ignition coil using a multimeter. If it shows resistance outside the manufacturer’s specifications, replace it.
• Install the new ignition coil and connect the electrical connector.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit (if necessary).
• Remove the fuel injector from cylinder 2 by disconnecting the fuel rail and unbolting the injector.
• Inspect the injector for clogging or damage.
• Clean the injector using a fuel injector cleaning kit or replace it if necessary.
• Reinstall the injector and ensure proper sealing.

5. Conduct Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2 again to gain access.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading. Repeat for other cylinders for comparison.
• If the compression is low compared to other cylinders, further investigation into valve or piston issues may be needed.