how to fix P0302 misfire code in Toyota Camry XV50 (2012-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Locate cylinder 2's spark plug (usually the second from the front on the engine).
• Use a socket wrench to remove the spark plug.
• Inspect the old spark plug for wear or damage.
• Install a new spark plug, ensuring the gap is set to manufacturer specifications (typically around 0.044 inches).
• Torque the spark plug to the manufacturer’s specification (usually around 13-16 lb-ft).

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the securing bolt(s) and lift the ignition coil out.
• Install the new ignition coil, securing it with the bolt(s).
• Reconnect the electrical connector.

4. Inspect/Replace Fuel Injector (if needed)

• Remove the fuel injector connector for cylinder 2.
• Remove the fuel rail (if applicable) to access the injector.
• Carefully remove the old fuel injector.
• Install the new fuel injector with a new O-ring (apply a small amount of engine oil to the O-ring to ensure a proper seal).
• Reattach the fuel rail and reconnect the fuel injector connector.

5. Check for Vacuum Leaks

• Inspect all hoses leading to and from the intake manifold for cracks or loose connections.
• Use a smoke machine or carburetor cleaner to detect leaks while the engine is running.