why does my Honda Accord's check engine light keep coming on

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid any electrical issues during repair.

2. Address Error Code

• Identify the error code from the OBD-II scanner.
• Research and determine the appropriate repair based on the code (e.g., P0420 for catalytic converter inefficiency).
• If applicable, replace faulty components (e.g., oxygen sensors, spark plugs, etc.).

3. Inspect and Replace Components

• Spark Plugs and Ignition Coils:

  1. Remove the ignition coil cover and disconnect the coils from the spark plugs.
  2. Remove old spark plugs using a spark plug socket.
  3. Install new spark plugs with a torque of 13 lb-ft.
  4. Reconnect ignition coils and cover.

• Gas Cap:

  1. Inspect the gas cap for cracks or wear.
  2. Replace with a new gas cap if necessary.

4. Final Checks

• Reconnect the battery and start the engine.
• Clear the error codes using the OBD-II scanner.
• Monitor the vehicle for any reoccurrence of the check engine light.