my Honda Civic 11th Generation (2022-Present) has a check engine light with code P0302, what does it...

Solution

1. Preparation

• Gather tools and safety equipment.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 using a socket set.
• Extract the spark plug from cylinder 2 using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If damaged, replace with a new spark plug that meets OEM specifications (e.g., NGK or Denso).
• Reinstall the spark plug and torque to the manufacturer’s specification (typically around 13-16 lb-ft).

3. Check and Replace Ignition Coil (if necessary)

• If the spark plug is in good condition, inspect the ignition coil for signs of arcing or damage.
• Replace the ignition coil if faulty, ensuring it matches the OEM part.
• Reconnect the ignition coil securely.

4. Inspect Fuel Injector

• Remove the fuel rail if necessary to access the fuel injector for cylinder 2.
• Check the injector for proper operation; if faulty, replace the injector with an OEM equivalent.
• Reinstall the fuel rail and ensure all connections are secure.

5. Verify and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code and any other related codes.
• Start the engine and allow it to reach normal operating temperature.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Spark plug socket
• Compression tester (if needed)

Parts Required:

• Spark plug (OEM specification)
• Ignition coil (if required)
• Fuel injector (if necessary)

Estimated Repair Time: 1-3 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow engine components to cool before handling.