how to fix P0302 code in Honda Accord 10th Generation (2018-2022) misfire on cylinder 2

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Use a socket set to remove the bolts securing the coil.
  • Gently pull the coil out of the spark plug well.
• Remove the spark plug:
  • Use a spark plug socket and ratchet to unscrew the spark plug from the cylinder head.
• Install a new spark plug:
  • Apply anti-seize lubricant to the threads of the new spark plug.
  • Torque the spark plug to the manufacturer's specification (generally around 13 lb-ft).
• Reinstall the ignition coil and ensure it is seated properly.

3. Check and Replace Ignition Coil (if necessary)

• Test the ignition coil:
  • Use a multimeter to check the primary and secondary resistance. Compare readings with specifications in the service manual.
• If faulty, replace the ignition coil:
  • Remove the old coil and install the new one, ensuring it is properly connected to the spark plug.

4. Inspect and Replace Fuel Injector (if necessary)

• Remove the fuel injector from cylinder 2:
  • Disconnect the electrical connector and fuel line (use caution as fuel may spill).
  • Use the appropriate socket to remove the injector.
• Install the new fuel injector:
  • Apply fuel injector O-ring lubricant.
  • Secure the injector in place and reconnect the fuel line and electrical connector.

5. Reassemble and Connect Battery

• Reconnect the negative battery terminal.
• Start the engine and allow it to reach operating temperature.