how to address the check engine light and P0302 code in my Toyota RAV4 XA50 (2019-2024)?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, ignition coil removal tool.
• Remove the engine cover if applicable.
• Locate the ignition coil for cylinder 2 and disconnect the electrical connector.
• Remove the bolt securing the ignition coil and gently pull the coil out.
• Inspect the spark plug; if worn or fouled, replace with a new spark plug to manufacturer specifications (typically NGK or Denso).
• If the ignition coil is defective (check for signs of damage), replace it with a new unit.
• Reinstall the ignition coil and torque to factory specifications (usually around 7–10 ft-lbs).

3. Inspect Fuel Injector

• Tools Required: Fuel injector removal tool, multimeter.
• Disconnect the fuel injector connector for cylinder 2.
• Check the electrical resistance of the injector with a multimeter; compare with specifications.
• If the injector is faulty, replace it with a new fuel injector.
• Reconnect the fuel injector connector and ensure a secure fit.

4. Check for Vacuum Leaks

• Inspect all vacuum hoses and the intake manifold gasket for any cracks or leaks.
• Replace any damaged hoses or the intake manifold gasket as needed.

5. Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2 and insert the compression tester.
• Crank the engine and record the compression reading; compare it to factory specifications.
• If compression is low, further investigation may be needed for internal engine problems.