how to resolve P0302 code in my Toyota Camry Eighth Generation (2018-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the ignition coil from cylinder 2 by unscrewing the bolts and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket and inspect it for wear or fouling.
• If necessary, replace the spark plug with a new one, ensuring it is gapped correctly according to manufacturer specifications (typically around 0.043 inches).
• Reinstall the ignition coil, securing it with bolts and reconnecting the electrical connector.

3. Inspect and Replace Ignition Coil

• If the ignition coil is faulty, remove it using a socket set.
• Install a new ignition coil and ensure it is seated properly before securing it.
• Reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Use a fuel injector cleaner tool to clean the injector if it is clogged. Alternatively, replace the fuel injector if it is malfunctioning.
• Reconnect the fuel injector connector securely.

5. Conduct Compression Test

• Reinstall spark plug and ignition coil for cylinder 2.
• Use a compression gauge to check the compression in cylinder 2. The reading should be within the manufacturer’s specified range.
• If compression is low, further investigation is needed (e.g., valve issues, piston rings).

6. Final Checks

• Reconnect the negative battery terminal.
• Clear the error codes using the OBD-II scanner.
• Start the engine and monitor for any signs of misfire.