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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, basic hand tools.
• Disconnect the battery to prevent electrical shock.
• Ensure the engine is cool before starting work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 by unbolting and disconnecting the electrical connector.
• Use a spark plug socket to remove the spark plug from cylinder 1.
• Inspect the spark plug for wear, carbon buildup, or damage. Replace if necessary.
• Install the new spark plug hand-tight, then torque to the manufacturer's specification (typically 13-15 lb-ft).
• Reattach the ignition coil and ensure the connector is secure.

3. Check and Replace Ignition Coil (if necessary)

• If the ignition coil shows signs of damage or failure, remove it from cylinder 1.
• Install the new ignition coil, ensuring proper alignment and secure connection.
• Reconnect the electrical connector.

4. Fuel Injector Testing and Replacement (if necessary)

• If the injector is suspected to be faulty, remove the fuel rail assembly as per manufacturer instructions.
• Inspect the injector for clogs or damage. Clean or replace as needed.
• Reinstall the fuel injector and ensure it is seated properly.

5. Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• Insert the compression tester into the spark plug hole and crank the engine.
• Record the compression reading. If it is below the manufacturer's specification, further investigation into the engine internals may be necessary.