what does it mean if my Honda Civic 10th Generation (2016-2021) has a P0302 code?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.
• Allow the engine to cool down if it has been running.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the ignition coil for cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket. Inspect the spark plug for wear or damage.
• Install a new spark plug with the specified torque (usually around 13 lb-ft for Honda engines).

3. Replace Ignition Coil

• Tools Required: Socket set
• With the ignition coil still removed, install a new ignition coil for cylinder 2.
• Reconnect the electrical connector and secure the coil in place.

4. Check Compression

• Tools Required: Compression tester
• Remove the spark plug from cylinder 2 and insert the compression tester.
• Crank the engine to take a reading. Compare it with the manufacturer's specifications (usually around 180 psi; consult repair manual for precise figures).
• If compression is low, further investigation into engine internals may be necessary.

5. Inspect Fuel Injector

• Tools Required: Fuel injector removal tool (if necessary)
• Remove the fuel rail to access the injector for cylinder 2.
• Inspect the injector for clogs or leaks. Clean or replace if necessary.
• Reinstall the fuel injector and secure the fuel rail.