how to fix P0302 code on my Toyota Corolla E210 (2019-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool if it has been running.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil and spark plug from cylinder 2:
  1. Disconnect the electrical connector from the ignition coil.
  2. Unbolt the ignition coil using a socket wrench.
  3. Remove the spark plug with a spark plug socket.
• Install a new spark plug:
  1. Apply anti-seize compound to the threads of the new spark plug.
  2. Hand-tighten the spark plug into the cylinder head, then use a torque wrench to tighten to 13 lb-ft (18 Nm) of torque.
  3. Reinstall the ignition coil and reconnect the electrical connector.

3. Replace Ignition Coil (if necessary)

• Tools Required: Socket set.
• If the ignition coil is faulty:
  1. Remove the ignition coil from cylinder 2 as described above.
  2. Install the new ignition coil by reversing the removal process and ensuring it is seated properly.

4. Clean or Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector cleaning kit or replacement injector tool.
• If the fuel injector is clogged:
  1. Remove the fuel injector from cylinder 2.
  2. Clean it using a fuel injector cleaning kit, or replace it with a new injector.
  3. Reinstall the cleaned or new fuel injector.

5. Reassemble and Reconnect

• Reconnect the negative battery terminal.
• Ensure all components are properly reinstalled and connections are tight.