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

Solution

1. Preparation

• Ensure the vehicle is parked on a flat surface and the engine is turned off.
• Gather necessary tools and parts.

2. Gather Tools and Parts

• Tools Required: OBD-II scanner, socket set, multimeter, vacuum gauge, torque wrench.
• Parts Required: New gas cap (if needed), engine oil (if required), vacuum hose (if damaged).

3. Address Error Codes

• Use the OBD-II scanner to retrieve codes and note them down.
• Research the error codes to determine specific issues (e.g., P0420 for catalytic converter efficiency).

4. Inspect and Replace Gas Cap

• If a loose or damaged gas cap is identified, remove the old gas cap and replace it with a new one.
• Ensure that the new gas cap is tightened securely until it clicks.

5. Check Fluid Levels

• Inspect engine oil level using the dipstick; add oil if low.
• Change engine oil if it appears dirty or contaminated. Drain the oil and replace it with manufacturer-recommended oil, ensuring proper torque on the oil drain plug.

6. Check for Vacuum Leaks

• Use a vacuum gauge to test for leaks in the intake system.
• Replace any damaged vacuum hoses or connections that may be identified.

7. Electrical System Check

• Use a multimeter to test the battery voltage; a healthy battery should read around 12.6 volts.
• If voltage is low, recharge or replace the battery as necessary. Test the alternator for proper output.