how to fix P0302 cylinder 2 misfire in my Toyota RAV4 XA50 (2019-2024)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shock and ensure safety.

2. Remove Ignition Coil

• Locate the ignition coil for cylinder 2 (typically found on top of the cylinder head).
• Disconnect the electrical connector from the ignition coil.
• Remove the bolt securing the ignition coil using a socket set.
• Carefully pull the ignition coil out of the spark plug well.

3. Replace Spark Plug

• Use a spark plug socket to remove the spark plug from cylinder 2.
• Inspect the old spark plug for signs of wear; replace it with a new spark plug if necessary.
  • Torque specification: 13 lb-ft (18 Nm) for spark plug installation.
• Apply a small amount of anti-seize compound on the threads of the new spark plug before installation.

4. Check and Replace Fuel Injector (if needed)

• If injector issues are suspected, disconnect the fuel line and electrical connector from the fuel injector for cylinder 2.
• Remove the fuel injector using a socket or wrench.
• Replace the injector with a new one if testing indicates it is faulty.
• Reinstall the fuel injector, ensuring proper alignment and sealing.

5. Reinstall Components

• Reinstall the ignition coil onto the spark plug and secure it with the bolt.
• Reconnect the electrical connector to the ignition coil.
• Reconnect the battery.

6. Clear Codes and Test Drive

• Use the OBD-II scanner to clear any trouble codes.
• Start the engine and let it idle; monitor for any check engine light activation.
• Test drive the vehicle to ensure proper operation and verify that the misfire issue is resolved.