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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Replace Spark Plug

1. Remove the ignition coil cover, if applicable.
2. Disconnect the electrical connector from the ignition coil on cylinder 2.
3. Remove the ignition coil using a socket set.
4. Extract the spark plug from cylinder 2 using a spark plug socket.
5. Inspect the new spark plug for the correct gap and install it into the cylinder.
6. Reinstall the ignition coil over the new spark plug.

3. Inspect and Replace Ignition Coil (if necessary)

1. If the ignition coil was found faulty during diagnostics, replace it with a new one.
2. Reconnect the electrical connector to the new ignition coil.

4. Check and Clean/Replace Fuel Injector (if necessary)

1. Remove the fuel injector rail (ensure the fuel system is depressurized).
2. Inspect the fuel injector for clogs or damage.
3. Clean the fuel injector using an appropriate cleaner or replace it with a new one if necessary.
4. Reassemble the fuel injector rail and reconnect any necessary lines.

5. Test Compression (if necessary)

1. If there are still misfire symptoms, perform a compression test on cylinder 2.
2. If compression is low, further investigation is required to address potential mechanical issues.