why does my Ford Mustang S650 (2024-Present) check engine light keep coming on

Solution

1. Preparation

• Gather tools including an OBD-II scanner, socket set, and safety glasses.
• Ensure the vehicle is parked on a flat surface and the engine is cool.

2. Address Diagnostic Codes

1. Connect the OBD-II scanner to the vehicle's diagnostic port.
2. Retrieve and document any trouble codes.
3. Refer to the service manual for specific troubleshooting procedures for each code.

3. Inspect and Replace Components

1. Gas Cap

   • Check for cracks or wear on the gas cap.
   • If damaged, replace with a new cap.

2. Ignition System

   • Remove spark plug wires and inspect for damage.
   • Replace worn spark plugs with OEM parts, ensuring proper gap settings.
   • Replace ignition coils if indicated by diagnostic codes.

3. Air Filter

   • Remove the air filter housing.
   • Inspect the air filter and replace if clogged or dirty.

4. Vacuum Leaks

   • Visually inspect all vacuum hoses for cracks or disconnections.
   • Use a smoke machine to identify any leaks if necessary.

4. Clear Codes and Test

1. Clear the error codes using the OBD-II scanner.
2. Start the engine and let it reach operating temperature.
3. Conduct a test drive under various conditions to monitor for issues.