what does a P0302 code mean for my Honda Accord 10th Generation (2018-2022)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shock.
• Allow the engine to cool down completely if it has been running.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Remove the retaining bolts with a socket set.
  • Carefully pull the ignition coil out.
• Inspect the spark plug:
  • Remove the spark plug using a spark plug socket.
  • Check for signs of fouling, wear, or damage.
• Replace the spark plug if necessary:
  • Install a new spark plug with the correct gap specification.
  • Torque to manufacturer specifications (usually around 13-16 ft-lbs).

3. Inspect and Replace Ignition Coil (if needed)

• If the spark plug is fine, test the ignition coil:
  • Use a multimeter to check the primary and secondary resistance.
• Replace the ignition coil if it's faulty:
  • Connect the new ignition coil to the wiring harness.
  • Secure it in place with the retaining bolts.

4. Check and Clean Fuel Injector

• Remove the fuel injector from cylinder 2:
  • Disconnect the electrical connector and fuel line (be cautious of fuel spills).
  • Remove the mounting bolts.
• Inspect the injector for clogs:
  • Clean the injector using a fuel injector cleaner.
  • If it is severely clogged, replace it with a new one.
• Reinstall the injector and reconnect the fuel line.

5. Reassemble and Test

• Reattach the ignition coil and the battery terminal.
• Start the engine and monitor for any check engine light reappearance.