how to fix P0302 code on my Toyota RAV4

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a flat surface and securely parked.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2 using a socket wrench.
• Remove the spark plug with a spark plug socket.
• Inspect the spark plug for wear. Replace if necessary with an OEM equivalent, ensuring the gap is set to manufacturer specifications (typically 0.043 inches).
• Reinstall the spark plug and ignition coil. Torque the spark plug to 13 lb-ft.

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, test the ignition coil’s resistance using a multimeter.
• If the resistance values are outside the manufacturer’s specifications, replace the ignition coil with a new one.
• Reinstall the ignition coil and connect the electrical connector securely.

4. Check for Vacuum Leaks

• Inspect all hoses connected to the intake manifold for cracks or disconnections.
• Use a smoke machine or carburetor cleaner to identify vacuum leaks around the intake manifold.
• Repair or replace any damaged hoses or gaskets as necessary.

5. Clean or Replace Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel injector using a fuel injector removal tool.
• Clean the injector with an appropriate cleaner or replace it with a new unit.
• Reinstall the injector and reconnect the electrical connector.

6. Reconnect Battery and Clear Codes

• Reconnect the battery terminals.
• Use the OBD-II scanner to clear the P0302 code from the ECU.
• Start the engine and monitor for any check engine light reoccurrence.