how to fix the check engine light issue in my Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to prevent electrical shorts.
• Tools Required: OBD-II scanner, socket set, multimeter, basic hand tools.

2. Address Fault Codes

• Sub-step 1: Refer to the OBD-II scanner results for specific codes.
• Sub-step 2: Research the fault codes to determine possible issues (e.g., P0420 for catalytic converter efficiency).
• Sub-step 3: Proceed to fix the underlying problem indicated by the codes (e.g., replace faulty sensors or components).

3. Inspect and Replace Components

• Sub-step 1: If the gas cap is damaged, replace it with a new one (ensure it's the correct OEM part).
• Sub-step 2: If the air filter is dirty, remove the air intake cover, detach the old filter, and replace it with a new one.
• Sub-step 3: If spark plugs are worn, remove the ignition coils, take out spark plugs, and replace them with new ones (ensure proper gap settings).

4. Reset Check Engine Light

• Sub-step 1: Reconnect the battery and start the engine.
• Sub-step 2: Use the OBD-II scanner to clear the fault codes.
• Sub-step 3: Conduct a test drive to ensure the check engine light does not re-illuminate.