how to address P0302 misfire code in my Toyota RAV4 XA50 (2019-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Use a spark plug socket to remove the spark plug from cylinder 2.
• Inspect the spark plug for wear or fouling; replace if necessary (OEM specifications are recommended).
• Torque the new spark plug to the manufacturer's specifications (typically around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil on cylinder 2.
• Remove the mounting bolts and lift the ignition coil out.
• Inspect the coil for cracks or damage; replace if necessary.
• Reinstall the new ignition coil and torque bolts to specifications.

4. Test and Replace Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Use a multimeter to check the resistance of the fuel injector; replace if outside manufacturer specifications.
• Reconnect the new or tested injector and ensure it is seated properly.

5. Compression Test

• Remove the spark plug from cylinder 2 again for access.
• Insert a compression gauge into the spark plug hole and crank the engine.
• Record the reading; it should be within the manufacturer’s compression specifications (typically around 180 psi).
• If compression is low, further engine diagnostics may be necessary.

6. Reassemble and Reconnect Battery

• Reinstall any components removed during the process.
• Reconnect the negative battery terminal.