how to resolve P0302 code in my Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool down before starting any work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, gap gauge
• Remove the ignition coil cover if applicable.
• Use a socket to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear or damage; replace if necessary.
• Check the gap using a gap gauge and adjust to the manufacturer’s specifications.
• Install the new spark plug and torque it to the specified value (typically around 13-16 lb-ft).

3. Check and Replace Ignition Coil (if needed)

• Remove the ignition coil from cylinder 2 by unscrewing the mounting bolts.
• Inspect the coil for cracks or wear; if damaged, replace with a new coil.
• Install the new ignition coil, ensuring it is seated correctly, and secure it with the mounting bolts.

4. Inspect and Replace Fuel Injector (if needed)

• Disconnect the fuel injector connector.
• Remove the fuel rail if necessary to access the injector.
• Inspect the injector for clogs or leaks; replace if there are any issues.
• Reinstall the fuel rail and reconnect the injector connector.

5. Perform Compression Test (if misfire persists)

• Tools Required: Compression tester
• Remove the spark plugs from all cylinders.
• Insert the compression tester into cylinder 2 and crank the engine.
• Record the compression reading; it should be within the manufacturer’s specifications.
• If the reading is low, further investigation may be needed for internal engine issues.