how to fix P0302 code in my Toyota RAV4 Fifth Generation (2019-present)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, gap gauge
• Remove the engine cover (if applicable) to access the spark plugs.
• Use a socket to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear or damage; replace it if necessary.
• Ensure the gap of the new spark plug is set to manufacturer specifications (typically 0.043 inches for most Toyota models).
• Install the new spark plug and torque it to the manufacturer’s specifications (usually around 13 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, torque wrench
• Remove the ignition coil from cylinder 2 by unscrewing the retaining bolts and disconnecting the electrical connector.
• Inspect the ignition coil for signs of damage or failure. If damaged, replace it with a new part.
• Reinstall the ignition coil, securing it in place and reconnecting the electrical connector. Torque the bolts to the manufacturer’s specifications.

4. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel line removal tool, socket set, torque wrench
• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the fuel injector connector and remove the fuel rail bolts.
• Carefully lift the fuel rail to access the injector for cylinder 2.
• Remove the old fuel injector and replace it with a new one, ensuring O-rings are properly seated.
• Reinstall the fuel rail and reconnect the fuel injector connector.

5. Reassemble and Reconnect Battery

• Reinstall any engine covers removed during the process.
• Reconnect the negative battery terminal.