how to fix the P0302 code on my Honda Civic 9th Generation (2012-2015)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

1. Remove the engine cover (if applicable).
   • Tools: Socket set.
2. Remove the ignition coil for cylinder 2.
   • Disconnect the electrical connector and unbolt the coil.
3. Remove the spark plug using a spark plug socket.
   • Inspect for wear or damage.
4. Replace the spark plug with a new one (use OEM specifications).
   • Torque to manufacturer specifications (typically around 13 lb-ft).

3. Inspect and Replace Ignition Coil

1. Test the ignition coil with a multimeter for resistance (if applicable).
2. If faulty, install a new ignition coil for cylinder 2.
   • Connect the electrical connector and secure it with bolts.

4. Inspect and Replace Fuel Injector

1. Remove the fuel rail (if necessary) to access the fuel injector for cylinder 2.
   • Tools: Torque wrench, socket set.
2. Disconnect the fuel injector connector and remove the injector.
3. Install a new fuel injector and reconnect it.
4. Reinstall the fuel rail and ensure all connections are secure.

5. Compression Test

1. Perform a compression test on cylinder 2 using a compression gauge.
   • If compression is low, further investigation of the engine internals may be needed (e.g., valve issues).

6. Reassemble and Reconnect

• Reinstall any components removed during the process (engine cover, air intake).
• Reconnect the negative battery terminal.