how to fix a misfire in my Toyota Camry Eighth Generation (2018-present) with code P0302?

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable (use socket set).
  2. Disconnect the ignition coil connector from the spark plug.
  3. Remove the ignition coil using a socket wrench.
  4. Unscrew and remove the spark plug using a spark plug socket.
  5. Inspect the spark plug for wear or damage; replace if necessary with OEM specifications.
  6. Gap the new spark plug according to manufacturer specifications (typically 0.043 inches for Toyota).
  7. Reinstall the spark plug and torque to the manufacturer’s specification (approximately 13 lb-ft).
  8. Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug is in good condition, proceed to inspect the ignition coil.
  2. Test the ignition coil’s resistance with a multimeter (consult service manual for specifications).
  3. If faulty, remove the ignition coil and replace it with a new one.
  4. Reconnect the ignition coil and ensure the connector is secure.

4. Check Fuel Injector

• Sub-steps:
  1. Locate the fuel injector for cylinder 2.
  2. Disconnect the fuel injector connector.
  3. Use a multimeter to test injector resistance (typically 12-16 ohms).
  4. If faulty, replace the fuel injector with a new OEM part.
  5. Reconnect the fuel injector and ensure proper seating.