what does code P0302 mean for my Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 using a socket set.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for signs of carbon buildup or damage. If necessary, replace with a new spark plug (OEM recommended).
• Reinstall the spark plug and ignition coil, ensuring they are torqued to manufacturer specifications (typically 13 lb-ft for spark plugs).

3. Check and Replace Ignition Coil (if applicable)

• If the spark plug is in good condition, test the ignition coil using a multimeter for resistance.
• If the ignition coil is faulty, replace it with a new one (OEM recommended).
• Reinstall the ignition coil ensuring all connectors are secure.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector from cylinder 2 using a fuel injector puller.
• Inspect the injector for clogs or leaks.
• Clean the fuel injector with an appropriate cleaning solution or replace if necessary.
• Reinstall the fuel injector and reconnect the fuel line ensuring no leaks.

5. Conduct Compression Test

• If misfire persists, perform a compression test on cylinder 2.
• If the compression is below specification (usually around 180 psi for Honda engines), further investigation is needed for internal engine issues.