how to fix the P0302 code in my Toyota RAV4 XA40 (2013-2018)?

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Use a socket wrench to remove the bolts securing the ignition coil.
  • Carefully pull the ignition coil out of the cylinder head.
• Remove the spark plug:
  • Use a spark plug socket to unscrew the spark plug from the cylinder head.
  • Inspect the spark plug for signs of wear, fouling, or damage.
• Install a new spark plug:
  • Apply anti-seize compound to the threads of the new spark plug.
  • Torque the spark plug to the manufacturer’s specification (typically around 13-16 lb-ft).
• Reinstall the ignition coil and secure it with the bolts.

3. Test and Replace Ignition Coil (if necessary)

• If the ignition coil appears damaged or if the spark plug replacement does not resolve the issue, replace the ignition coil:
  • Disconnect the electrical connector from the ignition coil.
  • Remove the ignition coil as mentioned previously.
  • Install the new ignition coil in reverse order and reconnect the electrical connector.

4. Inspect and Replace Fuel Injector (if necessary)

• If misfire persists, inspect the fuel injector for cylinder 2:
  • Remove any components obstructing access to the fuel injector.
  • Disconnect the fuel injector connector.
  • Remove the fuel rail (if applicable) to access the injector.
• Test the fuel injector for proper operation using a multimeter or replace it if necessary.
• Reassemble the fuel rail and reconnect the fuel injector connector.