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

Solution

1. Preparation

• Gather tools and parts required for repair.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, dielectric grease
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector and remove the ignition coil from cylinder 2.
• Remove the spark plug using a spark plug socket.
• Inspect the old spark plug for wear; replace if necessary.
• Install the new spark plug, tightening to the manufacturer's specified torque (typically around 13 ft-lbs).
• Apply a small amount of dielectric grease to the ignition coil boot before reinstallation.

3. Replace Ignition Coil (if necessary)

• If the ignition coil is found to be faulty during inspection, replace it.
• Install the new ignition coil in cylinder 2 and reconnect the ignition coil connector.

4. Test Fuel Injector

• Remove the fuel injector connector for cylinder 2.
• Use a multimeter to check for resistance; compare it with the specifications from the service manual.
• If the injector is faulty, replace it following the specific procedure for your model (removing the fuel rail may be required).
• Reconnect the injector and fuel rail.

5. Inspect and Repair Vacuum Leaks

• Check all vacuum hoses connected to the intake manifold for cracks or disconnections.
• If leaks are found, replace or reattach the affected hoses.