why does my Ford F-150 14th Generation (2021-2024) check engine light keep coming on

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, basic hand tools.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical shorts during repairs.

2. Address Error Codes

• Sub-steps:
  • Reconnect the OBD-II scanner and note the specific error codes.
  • Research the error codes to determine the root cause (e.g., P0420 for catalytic converter efficiency).

3. Inspect and Replace Components

• Sub-steps:
  • For spark plug issues:
    • Remove the ignition coils using a socket set.
    • Replace spark plugs if worn or fouled, ensuring they are gapped correctly (typically 0.054 inches for F-150).
    • Reinstall ignition coils and torque to manufacturer specifications (usually around 7-10 ft-lbs).
  • For fuel system issues:
    • Check the fuel pressure using a fuel pressure gauge and compare to specifications (typically around 30-50 psi).
    • Replace fuel filter if clogged, following manufacturer guidelines.

4. Check and Replace Gas Cap

• Sub-steps:
  • Inspect the gas cap for cracks or damage.
  • If necessary, replace the gas cap with an OEM part, ensuring it clicks into place securely.

5. Clear Codes and Reconnect Battery

• Sub-steps:
  • Use the OBD-II scanner to clear any stored error codes.
  • Reconnect the battery, ensuring all connections are tight and secure.