why does my Ford Explorer Sixth Generation (2020-present) check engine light keep coming on

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Address Error Codes

• Reconnect the OBD-II scanner and note down any error codes.
• Research each code to identify potential issues (e.g., P0420 for catalytic converter efficiency).

3. Inspect and Repair Components

• Gas Cap:
  • Check for cracks or damage.
  • Replace if necessary.
• Spark Plugs and Ignition Coils:
  • Remove the ignition coils and spark plugs.
  • Inspect for wear; replace with OEM parts if damaged.
• Vacuum Hoses:
  • Inspect all hoses for cracks or disconnections.
  • Replace any damaged hoses with new ones.

4. Fuel System Check

• Use a fuel pressure gauge to check the fuel pressure.
• If pressure is low, inspect the fuel pump and filter.
• Replace the fuel filter or pump if required.

5. Reassemble and Reset

• Reinstall any removed components (spark plugs, ignition coils, etc.).
• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear any stored error codes.