how to fix the P0302 misfire code on my Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2:
  • Use a socket set to unscrew the coil mounting bolts.
  • Carefully pull the coil out of the spark plug well.
• Remove the spark plug:
  • Use a spark plug socket to unscrew and remove the spark plug from cylinder 2.
• Inspect the spark plug for wear or damage:
  • Replace the spark plug if it shows signs of wear or fouling (e.g., oil or carbon deposits).
• Install the new spark plug:
  • Torque to the manufacturer's specification (usually around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Test the ignition coil functionality:
  • If the coil is faulty, replace it with a new one.
• Install the new ignition coil:
  • Ensure it is seated properly over the new spark plug and secure it with the mounting bolts.

4. Check Fuel Injector

• Access the fuel injector for cylinder 2:
  • Remove any necessary components to reach the fuel injector (e.g., intake manifold).
• Inspect the fuel injector for clogs or leaks:
  • Clean or replace the fuel injector if necessary.

5. Reconnect Components

• Reinstall any components that were removed to access the spark plug, ignition coil, and fuel injector.
• Reconnect the negative battery terminal.