what does it mean when my Toyota RAV4 XA50 (2019-2024) has a P0302 code

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, mechanic's stethoscope.
• Safety Warnings: Disconnect the battery before working on electrical systems.

2. Inspect and Replace Ignition Components

1. Remove the engine cover (if applicable) to access the ignition components.
2. Disconnect the ignition coil connector and remove the retaining bolts for the ignition coil from cylinder 2.
3. Inspect the ignition coil for damage or wear; replace if necessary.
4. Remove the spark plug from cylinder 2 using a spark plug socket. Inspect the spark plug for wear or fouling; replace if necessary.
5. Reinstall the new spark plug and coil, ensuring to torque the spark plug to the manufacturer’s specifications (typically around 13-16 ft-lbs).

3. Check and Replace Fuel Injector

1. Access the fuel rail by removing any necessary components for visibility.
2. Disconnect the fuel injector connector for cylinder 2.
3. Test the injector using a multimeter to ensure it is receiving power and functioning correctly.
4. If faulty, remove the fuel injector from the rail, replacing it with a new one and ensuring proper seating.
5. Reconnect the fuel line and injector connector.

4. Conduct a Compression Test

1. Remove the spark plug from cylinder 2.
2. Insert the compression tester into the spark plug hole and crank the engine until the gauge stabilizes.
3. Record the compression reading; it should be within the manufacturer's specifications (typically 180-200 psi).
4. If compression is low, further investigation may be required for valve or piston issues.

5. Reassemble and Test

1. Reinstall any components that were removed during the repair.
2. Reconnect the battery and clear the diagnostic trouble codes.
3. Start the engine and allow it to reach operating temperature.
4. Monitor for any reoccurrence of the P0302 code.