how to fix P0302 code in my Toyota RAV4 Fourth Generation (2013-2018)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench, anti-seize compound.
• Remove the ignition coil cover (if applicable).
• Disconnect the electrical connector from the ignition coil.
• Remove the ignition coil from cylinder 2.
• Remove the spark plug using the spark plug socket.
• Inspect the spark plug for wear or fouling; replace if necessary.
• Install the new spark plug using anti-seize compound on the threads, and torque it to the manufacturer's specification (typically around 13-16 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• If the spark plug is fine, inspect the ignition coil for damage.
• Remove the ignition coil from cylinder 2.
• Test the coil with a multimeter (consult manufacturer specifications for resistance values).
• If faulty, replace the ignition coil with a new one.
• Reinstall the ignition coil and ensure it's securely connected.

4. Test Fuel Injector

• Tools Required: Fuel pressure gauge, injector tester (if available).
• Check fuel injector operation for cylinder 2 using a noid light or injector tester.
• If the fuel injector is not firing properly, remove and replace it.
• Ensure fuel injector O-rings are in good condition during installation.

5. Check for Vacuum Leaks

• Inspect vacuum hoses and intake manifold gaskets around cylinder 2 for leaks.
• If any leaks are found, replace damaged hoses or gaskets as necessary.