what does it mean if my Toyota RAV4 XA40 (2013-2018) has a P0302 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool down before working.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Unscrew the spark plug wire or ignition coil from cylinder 2.
  3. Use a spark plug socket to remove the spark plug.
  4. Inspect the spark plug for fouling, wear, or damage. Replace if necessary.
  5. Gap the new spark plug to the manufacturer’s specifications (usually around 0.043 inches for a RAV4).
  6. Install the new spark plug and reconnect the ignition coil or spark plug wire.

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the ignition coil appears damaged, remove it by unscrewing the mounting bolts.
  2. Disconnect the electrical connector from the ignition coil.
  3. Install the new ignition coil and reconnect the electrical connector.
  4. Ensure it's secured with mounting bolts to the specified torque (usually around 15 lb-ft).

4. Test Fuel Injector

• Sub-steps:
  1. Remove the fuel injector connector from cylinder 2.
  2. Use a noid light to check for signal; if no signal, further investigate wiring or ECU.
  3. If the injector is faulty, remove it using a fuel injector puller.
  4. Install the new fuel injector, ensuring proper seating and connection.
  5. Reconnect the fuel injector connector.