how to fix P0302 code on my Honda Civic 11th Generation (2022-Present)

Solution

1. Preparation

• Gather required tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery negative terminal for safety.

2. Inspect and Replace Spark Plug

• Remove the engine cover if necessary.
• Locate the spark plug for cylinder 2 (typically found near the ignition coil).
• Use a spark plug socket to remove the spark plug.
  • Tools Required: Spark plug socket, ratchet, torque wrench
• Inspect the spark plug for wear, carbon buildup, or damage. Replace if necessary.
  • Torque Specification: 13 lb-ft (18 Nm) for spark plug installation.
• Reinstall the spark plug and secure it to the specified torque.

3. Inspect and Replace Ignition Coil

• Remove the ignition coil from cylinder 2 by unscrewing the retaining bolts.
  • Tools Required: Socket set
• Inspect the ignition coil for cracks or signs of failure. If faulty, replace it with a new one.
• Reinstall the ignition coil and secure it with the appropriate torque.

4. Check Fuel Injector

• Disconnect the electrical connector from the fuel injector for cylinder 2.
• Use a noid light to check for proper voltage; if no voltage is detected, troubleshoot wiring.
• If the injector is faulty, remove and replace it with a new one.
  • Tools Required: Fuel injector puller (if necessary)
• Ensure O-rings are properly lubricated and seated before installation.

5. Reassemble and Clear Codes

• Reconnect all components, including battery terminal.
• Start the engine and allow it to reach operating temperature.
• Use an OBD-II scanner to clear the P0302 code and any other related codes.