what does it mean if my Toyota Corolla E170 (2013-2019) has a P0302 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 2.
• Use a spark plug socket and ratchet to remove the spark plug.
• Inspect the spark plug for wear or damage; replace if necessary.
• Install a new spark plug, ensuring it is gapped correctly (typically 0.043 inches for a Corolla).
• Torque the spark plug to the manufacturer's specifications (usually around 13 lb-ft).

3. Check and Replace Ignition Coil

• After inspecting the ignition coil for cracks or signs of wear, if defective, remove it from the cylinder head.
• Install a new ignition coil, ensuring it is seated properly.
• Connect the wiring harness to the new ignition coil securely.

4. Inspect Fuel Injector

• Remove the fuel injector from cylinder 2 using appropriate tools.
• Check the injector for clogs or leaks; clean or replace as necessary.
• Reinstall the injector and ensure it is seated and connected properly.

5. Reassemble and Test

• Reconnect the battery terminal.
• Start the engine and let it idle, checking for any misfires or symptoms.
• Use the OBD-II scanner to clear the P0302 code and monitor for reoccurrence.