how to resolve a check engine light on Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather tools and parts required for repairs.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool if it has been running.

2. Address Error Codes

• Retrieve the error codes from the OBD-II scanner.
• Research the codes to determine the specific causes (e.g., P0420 for catalytic converter efficiency).

3. Repair or Replace Faulty Components

• For Spark Plugs and Ignition Coils:

  • Remove the engine cover if necessary.
  • Disconnect the electrical connectors from the ignition coils.
  • Remove the bolts securing the coils and pull them out.
  • Replace spark plugs with new ones (torque to manufacturer specification, typically around 13 lb-ft).
  • Reinstall ignition coils and reconnect electrical connectors.

• For Gas Cap Issues:

  • Inspect the gas cap for cracks or wear.
  • Replace the gas cap if necessary.

• For Catalytic Converter Issues:

  • Inspect the catalytic converter for physical damage or excessive carbon buildup.
  • If defective, remove and replace with a new catalytic converter (ensure proper alignment and secure with bolts to manufacturer torque specifications).

4. Clear Error Codes

• Using the OBD-II scanner, clear the error codes after repairs are completed.
• Reconnect the negative battery terminal.