how to fix P0302 code in Toyota Corolla E170 (2013-2019)?

Solution

1. Preparation

• Gather tools and parts necessary for the repair.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Remove the engine cover (if applicable) using a socket set.
• Locate and remove the spark plug for cylinder 2 using a spark plug socket.
  • Tools Required: Spark plug socket, ratchet, extension.
• Inspect the spark plug for signs of wear (e.g., carbon deposits, cracks) and replace if necessary.
• Install the new spark plug, ensuring it is torqued to the manufacturer's specification (typically 13-15 lb-ft).
• Reattach any engine cover removed.

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 2.
• Remove the ignition coil using a socket set.
  • Tools Required: Socket set.
• Inspect the ignition coil for damage or wear; replace if defective.
• Install the new ignition coil and reconnect the electrical connector. Torque to specification (if applicable).

4. Check Fuel Injector

• Disconnect the fuel injector connector for cylinder 2.
• Use a noid light to check if the fuel injector is receiving the correct signal.
• If the injector is not functioning, replace it with a new one.
  • Tools Required: Basic hand tools to access the injector.
• Reconnect the fuel injector and ensure all connections are secure.