how to fix P0302 code on my Toyota RAV4 XA40 (2013-2018)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative terminal of the battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Multimeter
• Fuel injector cleaning kit (if needed)

2. Replace Spark Plug and Ignition Coil

1. Remove the engine cover if applicable.
2. Disconnect the electrical connector from the ignition coil for cylinder 2.
3. Unbolt the ignition coil using the socket set and carefully remove it.
4. Extract the spark plug from cylinder 2 with the socket set.
5. Inspect the spark plug for wear, carbon deposits, or damage, and replace it as necessary.
6. Install the new spark plug, ensuring it's torqued to the manufacturer’s specification (usually around 13-15 lb-ft).
7. Install the new ignition coil, securing it with the bolt and reconnecting the electrical connector.

3. Check Fuel Injector

1. If misfire persists, remove the fuel injector for cylinder 2.
2. Clean the injector using a fuel injector cleaning kit or replace it if necessary.
3. Reinstall the fuel injector, ensuring it is properly seated and connected.

4. Reconnect Battery and Test

1. Reconnect the negative terminal of the battery.
2. Start the engine and let it idle for a few minutes.
3. Monitor engine performance for any signs of misfire.