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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is on a level surface and the engine is cool.
• Disconnect the negative terminal of the battery to prevent electrical shocks.

2. Replace Spark Plug and Ignition Coil

1. Remove Engine Cover (if applicable)
   • Use a socket set to remove any bolts securing the engine cover.
2. Remove Spark Plug
   • Use a spark plug socket to carefully unscrew and remove the spark plug from cylinder 2.
3. Inspect and Replace Spark Plug
   • Check the gap of the new spark plug according to manufacturer specifications (typically around 0.044 inches).
   • Install the new spark plug, tightening it to approximately 13 lb-ft (or manufacturer’s specification).
4. Remove Ignition Coil
   • Unplug the electrical connector from the ignition coil.
   • Remove the mounting bolts with a socket set and take out the ignition coil.
5. Replace Ignition Coil
   • Install the new ignition coil and secure it with bolts. Reconnect the electrical connector.

3. Check and Replace Fuel Injector (if necessary)

1. Access Fuel Injector
   • Depending on the engine layout, you may need to remove the intake manifold to access the fuel injector.
2. Remove Fuel Injector
   • Disconnect the electrical connector from the fuel injector.
   • Remove the clips and gently pull the injector out of the rail.
3. Install New Fuel Injector
   • Apply a small amount of engine oil to the O-ring of the new injector.
   • Insert the new injector into its place and secure it with clips. Reconnect the electrical connector.

4. Final Assembly and Recheck

1. Reassemble Intake Manifold (if removed)
   • Replace any gaskets and torque the manifold bolts to manufacturer specifications.
2. Reconnect Battery
   • Reconnect the negative terminal of the battery.
3. Start Engine
   • Start the engine and allow it to idle for a few minutes, ensuring the check engine light does not reappear.