how to fix P0301 misfire code Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shock.
• Allow the engine to cool if it has been running.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Locate the spark plug for cylinder 1 (refer to the service manual for location).
  3. Use a spark plug socket to carefully remove the old spark plug.
  4. Inspect the spark plug for signs of wear (e.g., carbon buildup, damage).
  5. Apply anti-seize lubricant on the threads of the new spark plug.
  6. Install the new spark plug to the manufacturer’s specified torque (typically around 13-15 ft-lbs).

3. Replace Ignition Coil

• Sub-steps:
  1. Disconnect the electrical connector from the ignition coil.
  2. Remove the mounting bolt(s) holding the ignition coil in place.
  3. Pull the ignition coil out of the spark plug tube.
  4. Install the new ignition coil and secure it with the mounting bolt(s) to the specified torque.
  5. Reconnect the electrical connector.

4. Check/Replace Fuel Injector

• Sub-steps:
  1. Remove any components obstructing access to the fuel injector on cylinder 1.
  2. Disconnect the electrical connector from the fuel injector.
  3. Remove the fuel rail if necessary to access the injector.
  4. Replace the old fuel injector with a new one, ensuring proper orientation.
  5. Reassemble the fuel rail and reconnect any disconnected components.

5. Final Assembly

• Reconnect the battery terminal.
• Start the engine to check for proper operation.
• Ensure no check engine light is illuminated.