how do I fix the check engine light on my Toyota Camry XV70 (2018-2024)?

Solution

1. Preparation

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

2. Address Fault Codes

• Based on OBD-II scanner results, research the specific fault codes.
• For common codes (e.g., P0420 for catalytic converter efficiency), proceed with targeted repairs.

3. Replace Faulty Components

• If the gas cap is defective:

  • Remove the old gas cap.
  • Install a new OEM gas cap.

• For replacing spark plugs:

  • Remove ignition coils by unscrewing them.
  • Extract old spark plugs using a spark plug socket.
  • Install new spark plugs with a gap of 0.044 inches, torqued to 13 lb-ft.

• If cleaning is required (e.g., throttle body):

  • Remove the throttle body from the intake manifold.
  • Clean it using throttle body cleaner and a soft cloth.
  • Reinstall the throttle body and reconnect the electrical connectors.

4. Clear Codes and Recheck

• Use the OBD-II scanner to clear the fault codes after repairs.
• Reconnect the battery.