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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before starting any work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench.
• Remove the ignition coil from cylinder 2.
• Remove the spark plug using the spark plug socket.
• Inspect the spark plug for signs of wear or damage (e.g., carbon buildup, cracks).
• If necessary, replace with a new spark plug, using the manufacturer's recommended type and torque to specifications (typically around 13-16 lb-ft).

3. Inspect and Replace Ignition Coil

• Reinstall the spark plug and ignition coil if they are in good condition.
• If the ignition coil is faulty, remove it from the cylinder head.
• Install a new ignition coil ensuring proper alignment.
• Torque to manufacturer specifications, typically around 7.2 lb-ft.

4. Test Fuel Injector

• Tools Required: Fuel pressure gauge.
• Disconnect the electrical connector from the fuel injector in cylinder 2.
• Use a multimeter to check the injector's resistance; replace if out of specification.
• Reconnect the fuel injector and ensure it clicks into place.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove spark plugs from all cylinders.
• Insert the compression tester into cylinder 2.
• Crank the engine and record the compression reading. It should be within the manufacturer's specified range (usually between 180-210 psi).
• If the compression is low, further investigation is required for potential internal engine issues.