how to resolve the P0302 misfire code in my Toyota Camry?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent any electrical shorts.

2. Replace Spark Plug

1. Remove the engine cover if necessary.
2. Locate the spark plug for cylinder 2.
3. Use a spark plug socket to remove the old spark plug.
4. Inspect the spark plug gap and replace it with a new one if it is worn or damaged.
5. Install the new spark plug and torque it to the manufacturer’s specifications (typically 13-20 lb-ft).

3. Check and Replace Ignition Coil (if necessary)

1. Disconnect the ignition coil connector.
2. Remove the retaining bolt securing the ignition coil.
3. Carefully pull out the ignition coil from the spark plug tube.
4. Install a new ignition coil if the old one is faulty, ensuring it is seated properly.
5. Reconnect the ignition coil connector.

4. Clean or Replace Fuel Injector

1. Remove the fuel injector connector and any associated wiring.
2. Use a fuel injector puller if necessary to remove the injector from the rail.
3. Inspect the injector for clogs; clean it using an appropriate injector cleaner or replace it if damaged.
4. Reinstall the injector, ensuring it is seated correctly in the fuel rail.

5. Reconnect Battery

1. Reconnect the negative battery terminal.
2. Start the engine and allow it to run for a few minutes to ensure the repair was successful.