how to fix Honda Accord misfire code P0302

Solution

1. Preparation

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

2. Replace Spark Plug

• Remove the ignition coil for cylinder 2:
  • Unplug the electrical connector.
  • Remove the mounting bolts using a socket set.
  • Carefully lift the coil out.
• Remove the spark plug using a spark plug socket:
  • Turn counterclockwise to loosen and remove.
• Install the new spark plug:
  • Gap the spark plug to manufacturer specifications (typically 0.043 inches for Honda).
  • Hand-tighten the spark plug, then use a torque wrench to tighten it to 13 lb-ft.
• Reinstall the ignition coil:
  • Position the coil over the spark plug and secure it with bolts.
  • Reconnect the electrical connector.

3. Inspect or Replace Ignition Coil

• If the ignition coil is faulty:
  • Remove the ignition coil as detailed above.
  • Install the new ignition coil by reversing the removal steps.

4. Check Fuel Injector

• To inspect the fuel injector:
  • Remove the fuel rail if necessary to access the injector.
  • Check for clogs and ensure the injector sprays fuel correctly.
• Replace the fuel injector if it is faulty:
  • Disconnect the electrical connector and fuel line.
  • Remove the injector from the rail and install the new one.
  • Reassemble the fuel rail and reconnect the fuel line and electrical connections.