my Honda Accord 10th Generation (2018-2022) has a check engine light with code P0302, what does it m...

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Remove the ignition coil on cylinder 2:
  • Use a socket set to remove the bolts securing the ignition coil.
  • Gently pull the ignition coil out of the cylinder head.
• Remove the spark plug:
  • Use a spark plug socket to carefully unscrew the spark plug from cylinder 2.
• Inspect the spark plug for damage or excessive wear.
• Replace with a new spark plug if necessary, ensuring it is gapped to the manufacturer’s specifications (usually around 0.043 inches for Honda engines).
• Reinstall the spark plug and ignition coil, tightening to the manufacturer's torque specifications (typically around 13 lb-ft for spark plugs).

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil:
  • Use a multimeter to check the primary and secondary resistance according to the specifications.
• If faulty, replace the ignition coil with a new one. Reinstall securely and reconnect the electrical connector.

4. Check Fuel Injector

• Remove the fuel injector for cylinder 2:
  • Disconnect the fuel injector connector.
  • Remove any retaining clips and carefully pull out the injector.
• Inspect the injector for clogs or damage.
• If necessary, replace with a new fuel injector.
• Reinstall the injector, ensuring it seats properly and reconnect the electrical connector.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code.
• Start the engine and check for any warning lights.