how to fix a P0301 code on my Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug and Ignition Coil (if faulty)

• Tools Required: Socket set, torque wrench, ratchet, spark plug socket, dielectric grease.
• Remove the engine cover (if applicable).
• Disconnect the wiring harness from the ignition coil on cylinder 1.
• Remove the ignition coil bolt using a socket.
• Pull the ignition coil out and inspect the rubber boot for damage.
• If the spark plug is worn, remove it using a spark plug socket.
• Install the new spark plug and torque it to the manufacturer’s specification (typically around 13-15 lb-ft).
• Apply a small amount of dielectric grease to the boot of the new ignition coil.
• Reinstall the ignition coil, securing it with the bolt and reconnecting the wiring harness.

3. Inspect and Clean Fuel Injector (if needed)

• Tools Required: Fuel injector cleaner, injector puller (if necessary).
• Disconnect the fuel injector wiring harness.
• Remove the fuel injector retaining clips (if applicable) and pull the injector out carefully.
• Clean the injector using a fuel injector cleaner or replace it if it is clogged or malfunctioning.
• Reinstall the fuel injector and secure it with the retaining clips.

4. Compression Test (if misfire persists)

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare the results against manufacturer specifications (usually between 100-180 psi).
• If compression is low, further investigation of the engine internals may be necessary.