my Toyota Camry XV50 (2012-2017) has a check engine light and code P0302

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket wrench to unscrew and remove the spark plug from cylinder 2.
• Inspect the old spark plug for wear or fouling.
• Install a new spark plug, ensuring it is gapped to the manufacturer's specifications (typically between 0.043-0.047 inches).
• Torque the spark plug to the manufacturer's specified value (usually around 13 ft-lbs).

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the ignition coil bolt with a socket wrench.
• Pull the ignition coil out of the cylinder head.
• Install the new ignition coil, ensuring it fits snugly.
• Reconnect the electrical connector and torque the bolt to the manufacturer's specification.

4. Inspect and Clean Fuel Injector

• If necessary, remove the fuel rail to access the injector for cylinder 2.
• Inspect the injector for clogs or damage.
• Clean the injector using an appropriate fuel injector cleaner or replace if heavily fouled.
• Reinstall the fuel rail and ensure all connections are secure.

5. Reconnect Battery and Check

• Reconnect the battery terminals.
• Start the engine and check for any warning lights or codes.