how to fix P0302 code on my Toyota Camry Eighth Generation (2018-present)?

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool
• Remove the ignition coil for cylinder 2 by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using a socket wrench.
• Inspect the spark plug for wear or fouling. If necessary, replace it with a new spark plug, ensuring the gap is set to the manufacturer's specifications (typically around 0.043 inches for a Camry).
• Reinstall the spark plug and torque to the manufacturer's specifications (usually around 13 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set
• If the ignition coil appears damaged, remove it and install a new ignition coil for cylinder 2.
• Ensure it is secured properly and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, basic hand tools
• Remove the fuel injector for cylinder 2 from the fuel rail.
• Clean the injector using a fuel injector cleaning kit, or replace it if it is not functioning properly.
• Ensure the injector O-ring is replaced and reattach it to the fuel rail.

5. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and monitor for any check engine light reappearance or rough idling.