how to diagnose P0302 code on my Toyota Camry XV70 (2018-2024)

Solution

1. Preparation

• Gather necessary tools and materials.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before beginning work.

2. Replace Spark Plug (if faulty)

• Remove the engine cover (if applicable).
• Disconnect the ignition coil connector and unscrew the ignition coil from cylinder 2.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear; replace it if necessary.
• Install a new spark plug, tightening to the manufacturer’s torque specification (typically around 13-16 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if faulty)

• If the ignition coil was found defective during inspection, remove the faulty coil from cylinder 2.
• Install a new ignition coil, ensuring it is securely fastened and the connector is properly attached.

4. Check Fuel Injector

• If the injector is faulty, remove the fuel rail and injector for cylinder 2.
• Replace the injector with a new one, ensuring it is seated properly and all O-rings are lubricated.
• Reinstall the fuel rail and reconnect all necessary fuel lines.

5. Address Compression Issues (if necessary)

• If compression test results indicate low compression in cylinder 2, further investigation is required, potentially leading to head gasket replacement or valve adjustments.