what does code P0302 mean for my Honda Civic 11th Generation (2022-Present)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 2:
  • Use a socket set to remove the bolts securing the coil.
  • Disconnect the electrical connector from the ignition coil.
• Remove the spark plug:
  • Use a spark plug socket and ratchet to unscrew the spark plug from cylinder 2.
• Inspect the spark plug for wear, cracking, or carbon buildup.
• If necessary, replace the spark plug with a new one of the same specification (refer to owner’s manual for the correct part number).

3. Check and Replace Ignition Coil

• Inspect the ignition coil for any signs of cracking or corrosion.
• If defective, replace the ignition coil:
  • Install the new ignition coil and reconnect the electrical connector.
  • Secure it with the bolts previously removed.

4. Test and Clean Fuel Injector

• Remove the fuel injector from cylinder 2:
  • Disconnect the fuel injector connector.
  • Remove any retaining clips or bolts securing the injector.
• Inspect the fuel injector for clogs or damage.
• If necessary, clean or replace the fuel injector.

5. Compression Test

• Reinstall the spark plug and ignition coil temporarily.
• Remove the fuel pump fuse to prevent fuel from entering the cylinder.
• Use a compression gauge to check cylinder 2 compression.
• Record the compression value and compare it to specifications in the service manual.

6. Reassemble and Clear Codes

• Reinstall all components that were removed.
• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code and any other codes found.