why does my Honda Accord Eleventh Generation (2023-present) check engine light keep coming on

Solution

1. Preparation

• Gather tools and parts needed for repairs.
• Disconnect the battery to prevent electrical shorts during the process.
• Allow the engine to cool before starting work.

2. Addressing Error Codes

• Sub-step 2.1: Use the OBD-II scanner to retrieve error codes.
• Sub-step 2.2: Research the codes to determine the specific malfunction (e.g., P0420 for catalytic converter efficiency).
• Sub-step 2.3: Based on the codes, proceed with targeted repairs.

3. Inspect and Replace Components

• Sub-step 3.1: For a faulty gas cap, replace it with an OEM part to ensure proper sealing.
• Sub-step 3.2: If the air filter is dirty, remove it and replace it with a new one that meets OEM specifications.
• Sub-step 3.3: Check and replace spark plugs if they show signs of wear or fouling; ensure proper gap size as per manufacturer specifications.
• Sub-step 3.4: If any ignition coils are malfunctioning, replace them with compatible parts.

4. Exhaust System Repair

• Sub-step 4.1: Inspect the exhaust system for visual signs of damage or leaks.
• Sub-step 4.2: Replace any damaged components such as gaskets or pipes with OEM parts.

5. Final Checks

• Sub-step 5.1: Reconnect the battery.
• Sub-step 5.2: Clear the error codes using the OBD-II scanner.
• Sub-step 5.3: Start the engine and check for the reappearance of the check engine light.