how do I fix P0302 code in my Toyota RAV4 XA40 (2013-2018)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to prevent electrical shorts.
• Allow the engine to cool before starting any work.

2. Replace Spark Plug

• Remove the ignition coil cover if applicable (use a socket set).
• Disconnect the electrical connector from the ignition coil and remove the coil (usually requires a socket).
• Remove the spark plug from cylinder 2 using a spark plug socket.
• Inspect the old spark plug for wear or damage; replace with a new spark plug if necessary.
• Torque the new spark plug to manufacturer specifications (typically around 13-15 lb-ft).

3. Replace Ignition Coil

• If the spark plug is fine, inspect the ignition coil for damage.
• Replace with a new ignition coil if it shows signs of wear.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check Fuel Injector

• If misfire persists, check the fuel injector for cylinder 2.
• Remove the fuel rail (ensure to relieve fuel pressure first) and inspect the injector for clogs.
• Clean or replace the fuel injector if necessary.

5. Reassembly and Final Checks

• Reinstall any components that were removed (coil cover, fuel rail).
• Reconnect the negative terminal of the battery.
• Start the engine and check for any leaks or abnormal noises.