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

Solution

1. Preparation

• Gather Tools and Parts: Ensure you have an OBD-II scanner, multimeter, socket set, torque wrench, spark plug socket, and a compression tester.
• Safety Warning: Disconnect the negative battery terminal before starting any work on the vehicle.

2. Replace Spark Plug (if faulty)

• Remove the engine cover if necessary.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil using a socket and ratchet.
• Use a spark plug socket to remove the spark plug from cylinder 2.
• Install a new spark plug, ensuring it is gapped correctly to manufacturer specifications (typically around 0.044 inches for Honda).
• Reinstall the ignition coil and reconnect the connector.

3. Test and Replace Ignition Coil (if faulty)

• If the ignition coil for cylinder 2 is suspected to be faulty, replace it.
• Disconnect the ignition coil connector and remove the coil as described above.
• Install the new ignition coil and reconnect the connector.

4. Inspect and Replace Fuel Injector (if faulty)

• To test the fuel injector, connect a noid light or use a multimeter to check for proper voltage.
• If the fuel injector is not operating correctly, remove it by disconnecting the electrical connector and fuel lines.
• Install a new fuel injector, ensuring it is seated properly and that O-rings are lubricated.

5. Compression Test (if needed)

• Remove all spark plugs for easier cranking of the engine.
• Insert the compression tester into the spark plug hole of cylinder 2.
• Crank the engine several times and observe the gauge.
• Repeat for other cylinders and compare values. If cylinder 2 shows significantly lower compression, further investigation into the valve or piston condition is necessary.