my Toyota RAV4 XA50 (2019-2024) engine light is on, what does it mean?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.

2. Address Error Codes

• 1.1. Use the OBD-II scanner to retrieve fault codes, noting any that appear.
• 1.2. Research the codes to determine common causes related to the specific issues (e.g., P0420 for catalytic converter efficiency).

3. Inspect and Replace Components

• 2.1. Fuel Cap Check

  • Remove and inspect the fuel cap for cracks or wear.
  • Replace with a new fuel cap if damaged.

• 2.2. Spark Plug Replacement

  • Remove the ignition coils using a socket set.
  • Extract spark plugs and inspect for wear; replace if necessary.
  • Reinstall new spark plugs with the correct torque specifications (typically 13-16 lb-ft).

• 2.3. Air Filter Replacement

  • Open the air filter housing by removing screws/clips.
  • Replace the air filter with a new one, ensuring a tight seal.

4. Clear Trouble Codes

• 3.1. Reconnect the negative battery terminal.
• 3.2. Use the OBD-II scanner to clear the trouble codes and reset the check engine light.