how to fix a check engine light on Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent electrical shorts.

2. Address Error Codes

• Use the OBD-II scanner to retrieve codes.
• Research the error codes to determine the specific issue (e.g., P0420 for catalytic converter efficiency).
• Clear the error codes after repairs to reset the check engine light.

3. Inspect and Replace Components

• Gas Cap Replacement:

  • Remove the old gas cap and inspect the sealing surface.
  • Install a new gas cap, ensuring it clicks into place securely.

• Spark Plug and Ignition Coil Replacement (if needed):

  • Remove the engine cover if applicable.
  • Disconnect the ignition coil connector and remove the coil.
  • Replace the spark plug using a spark plug socket, applying anti-seize compound on the threads.
  • Reinstall the ignition coil and connector.

• Air Intake Inspection:

  • Loosen and remove the air intake duct to inspect the air filter and intake manifold.
  • Replace the air filter if dirty and check for any leaks in the ducting.

• Exhaust System Inspection:

  • Inspect the exhaust pipes, muffler, and catalytic converter visually for any damage or leaks.
  • Repair or replace any damaged components as necessary.

4. Reassemble and Reconnect

• Reinstall any components removed during the repair process.
• Reconnect the battery terminals ensuring they are tight.