my Honda Pilot Third Generation (2016-present) check engine light is on what should I do

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Retrieve and Address Error Codes

• Use the OBD-II scanner to read and document any error codes.
• Research the codes to determine the specific issue (e.g., P0420 for catalytic converter efficiency).
• If applicable, clear the codes and observe if they return after a short drive.

3. Gas Cap Inspection and Replacement

• Check the gas cap for proper sealing and any signs of wear or damage.
• If defective, replace it with a new OEM or equivalent gas cap.
• Ensure it clicks securely when closed.

4. Visual Inspection and Repairs

• Inspect all accessible wiring and hoses around the engine for signs of wear, fraying, or disconnections.
• Repair or replace any damaged components as necessary.
• If applicable, check the air intake system for blockages or leaks and address any issues.

5. Testing Components

• For specific error codes, such as those relating to sensors (e.g., O2 sensors), use a multimeter to test the sensor outputs.
• Replace any faulty sensors or components based on the diagnostic findings.