how to fix P0302 code in Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench
• Remove the ignition coil from cylinder 2 by unscrewing the retaining bolts and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket. Inspect for wear, carbon deposits, or damage.
• If the spark plug is faulty, replace it with a new one, ensuring it meets the manufacturer specifications.
• Torque the new spark plug to the manufacturer's specifications (usually around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• If the spark plug is functioning properly, inspect the ignition coil for cylinder 2.
• Test the ignition coil using an ohmmeter; compare readings with specifications in the service manual.
• If faulty, replace the ignition coil with a new part and reconnect the wiring harness securely.

4. Check Fuel Injector

• Remove the fuel rail to access the fuel injector for cylinder 2.
• Inspect the injector for clogs or damage; clean or replace as necessary.
• Reinstall the fuel rail and ensure all connections are tight.

5. Clear Codes and Test Drive

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code from the vehicle's computer.
• Test drive the vehicle to ensure the misfire has been resolved and the check engine light does not reappear.