why does my Honda Accord check engine light keep coming on

Solution

1. Preparation

• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Gather tools and replacement parts needed for the repair.

2. Addressing Error Codes

• Sub-step 1: Use the OBD-II scanner to retrieve the error codes.
• Sub-step 2: Research the codes to identify potential issues (e.g., P0420 for catalytic converter inefficiency).
• Sub-step 3: Document the codes for reference during repairs.

3. Repairing Specific Issues

• For gas cap issues:

  • Sub-step 1: Replace the gas cap if damaged or improperly sealing.
  • Sub-step 2: Clear the error codes after replacement.

• For ignition system:

  • Sub-step 1: Remove the spark plugs using a socket set; inspect for wear.
  • Sub-step 2: Replace worn spark plugs with OEM specifications.
  • Sub-step 3: Inspect and replace faulty ignition coils as needed.

• For fuel system:

  • Sub-step 1: Test fuel pressure using a fuel pressure gauge.
  • Sub-step 2: Replace the fuel filter if clogged or replace the fuel pump if underperforming.

4. Clearing the Codes

• Sub-step 1: After repairs, reconnect the OBD-II scanner.
• Sub-step 2: Clear the error codes using the scanner.
• Sub-step 3: Take the vehicle for a test drive to check if the check engine light remains off.