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

Solution

1. Preparation

• Gather tools and components needed for repairs.
• Ensure the vehicle is parked on a flat surface, and the engine is off.
• Disconnect the battery to avoid any electrical shorts while working.

2. Address Diagnostic Trouble Codes

• Using the OBD-II scanner, note down the specific trouble codes.
• If codes indicate a specific issue (e.g., oxygen sensor failure), proceed to the corresponding section below.

3. Repair Components as Needed

• For Oxygen Sensor Replacement:

  • Locate the faulty oxygen sensor (usually near the exhaust manifold).
  • Unplug the sensor connector.
  • Use a socket wrench to remove the sensor.
  • Install the new sensor, torqueing it to manufacturer's specifications (typically around 30 ft-lbs).
  • Reconnect the electrical connector.

• For Spark Plug Replacement:

  • Remove the ignition coils or connectors.
  • Use a spark plug socket to remove the old spark plugs.
  • Install new spark plugs, ensuring they are gapped correctly to manufacturer specifications (usually around 0.030 inches).
  • Reinstall ignition coils/connectors.

4. Clear Error Codes

• Reconnect the battery and use the OBD-II scanner to clear the error codes.
• Ensure that the check engine light is off after clearing.

5. Test Drive

• Perform a test drive to monitor the vehicle’s performance and ensure the check engine light does not re-illuminate.