how to fix P0302 code in Toyota Camry Eighth Generation (2018-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before proceeding.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable using a socket set.
• Disconnect the ignition coil connector for cylinder 2.
• Remove the ignition coil from cylinder 2 using a socket.
• Extract the spark plug from cylinder 2 with a spark plug socket.
• Inspect the spark plug for wear; replace if necessary with a new spark plug that meets OEM specifications.
• Reinstall the new spark plug and torque to the manufacturer’s specifications (typically around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, test the ignition coil for cylinder 2 using a multimeter.
• If faulty, replace the ignition coil with a new one that meets OEM specifications.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check and Replace Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Remove the fuel rail (if necessary) to access the injector.
• Inspect the fuel injector for clogs or damage; replace if necessary with an OEM replacement.
• Reassemble the fuel rail and reconnect the injector.

5. Compression Test

• If misfire persists, perform a compression test.
• Remove spark plugs and install compression tester in cylinder 2.
• Crank the engine and record the compression reading.
• If compression is low, further engine diagnostics may be necessary (valve issues, head gasket failure).