why does my Honda Accord 9th Generation (2013-2017) check engine light keep coming on

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the negative terminal of the battery.
• Allow the engine to cool before starting work.

2. Address Fault Codes

• Using the OBD-II scanner, note any fault codes.
• Research specific codes to determine the necessary repairs (e.g., P0420 for catalytic converter efficiency).

3. Gas Cap Inspection

• Inspect the gas cap for cracks or wear.
• If damaged, replace the gas cap with an OEM part.
• Tighten the gas cap to ensure it seals properly.

4. Ignition System Repair

• Remove the engine cover (if applicable) using a socket set.
• Replace worn spark plugs with OEM replacements; torque to manufacturer's specifications (typically 13 lb-ft).
• Inspect ignition coils; replace any faulty coils as needed.

5. Air Filter Replacement

• Open the air filter box and remove the old air filter.
• Install a new air filter, ensuring it fits snugly within the housing.

6. Exhaust System Check

• Inspect the catalytic converter for physical damage or blockage.
• If the catalytic converter is failing, replace it following manufacturer guidelines.
• Reconnect all components and ensure there are no exhaust leaks.