why does my Honda Accord 10th Generation (2018-2022) engine light keep coming on and off

Solution

1. Preparation

• Gather required tools and parts.
• Ensure the vehicle is parked on a flat surface, and the engine is cool.
• Disconnect the battery to prevent any electrical shorts.

2. Address Error Codes

• Sub-step 1: Use the OBD-II scanner to retrieve and document error codes.
• Sub-step 2: Research codes to determine the underlying issue (e.g., P0420 for catalytic converter efficiency).
• Sub-step 3: Clear the codes and perform a test drive to see if the check engine light returns.

3. Replace Faulty Components

• Sub-step 1: If codes indicate faulty sensors (e.g., O2 sensor), remove the old sensor using a socket wrench.
• Sub-step 2: Install the new sensor and torque it to the manufacturer's specifications (typically around 30 ft-lbs).
• Sub-step 3: Reconnect the battery and check the operation.

4. Inspect and Repair Vacuum Leaks

• Sub-step 1: Visually inspect all vacuum hoses for cracks or disconnections.
• Sub-step 2: Use a smoke machine to detect any leaks if necessary.
• Sub-step 3: Replace any damaged hoses and ensure all connections are secure.

5. Tune-Up (if applicable)

• Sub-step 1: Replace spark plugs and wires if worn. Ensure correct gap settings as per manufacturer specs.
• Sub-step 2: Replace the air filter if dirty, ensuring proper airflow to the engine.
• Sub-step 3: Check fuel injectors for proper operation and clean if needed.