what does it mean if my Toyota RAV4 has a P0302 code

Solution

1. Preparation

• Gather tools and parts needed.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, multimeter.
• Remove the engine cover (if applicable).
• Remove the spark plug from cylinder 2 using the spark plug socket.
• Inspect the spark plug for wear or damage; replace if necessary.
• Test the ignition coil for proper resistance using a multimeter; replace if it fails the test.
• Reinstall the new spark plug and ignition coil, ensuring they are properly torqued to manufacturer specifications.

3. Check and Replace Fuel Injector

• Tools Required: Fuel injector puller, torque wrench.
• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail (if necessary) to access the injector; use a fuel injector puller if needed.
• Replace the fuel injector with a new one and ensure it is properly seated.
• Reconnect the fuel rail and ignition components.

4. Conduct Compression Test

• Tools Required: Compression tester.
• Remove the spark plugs from all cylinders.
• Insert the compression tester into cylinder 2 and crank the engine.
• Note the compression reading; compare it to manufacturer specifications. If it is low, further investigation is needed for potential internal engine issues.

5. Inspect for Vacuum Leaks

• Tools Required: Spray bottle with soapy water or intake cleaner.
• Visually inspect all vacuum hoses connected to the intake manifold.
• Spray soapy water or intake cleaner around suspected areas while the engine is running; a change in RPM indicates a vacuum leak.
• Repair or replace any damaged hoses or gaskets found.