what does the P0302 code mean for my Toyota Camry XV40 (2007-2011)?

Solution

1. Preparation

• Gather tools and materials needed for the repair.
• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, fuel injector cleaner.
• Safety Warnings: Disconnect the battery before working on electrical systems and allow the engine to cool before opening any components.

2. Inspect and Replace Spark Plug

• Remove the ignition coil and spark plug from cylinder 2.
• Inspect the spark plug for wear, cracks, or carbon buildup.
• If the spark plug is damaged, replace it with a new one. Torque the new plug to the manufacturer's specifications (usually around 13 lb-ft).
• Reinstall the ignition coil.

3. Test and Replace Ignition Coil (if necessary)

• Swap the ignition coil from cylinder 2 with another cylinder (e.g., cylinder 1).
• Clear the error codes and perform a test drive to see if the P0302 code returns; if it does, replace the ignition coil for cylinder 2.
• Install the new ignition coil, ensuring it is secured and connected properly.

4. Inspect and Clean Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Perform a resistance test using a multimeter to check for proper operation (typically around 12-16 ohms).
• If the injector is faulty, remove it and replace it with a new one; clean the fuel rail and seating area before installation.
• Reconnect the fuel injector connector.

5. Compression Test

• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole and crank the engine to check the compression reading.
• Compare the reading to the manufacturer’s specifications; if low, further mechanical inspection may be necessary.