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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket
• Remove the ignition coil by unscrewing the retaining bolts and disconnecting the electrical connector.
• Remove the spark plug using a spark plug socket. Inspect for wear or fouling.
• If damaged, replace with a new spark plug, ensuring it is gapped correctly per manufacturer specifications (typically 0.030-0.035 inches).
• Reinstall the spark plug and torque to the manufacturer’s specification (usually around 15 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, multimeter
• Test the ignition coil using a multimeter to check for proper resistance.
• If the coil is faulty, remove it and replace it with a new ignition coil specific to the 2021-2024 Ford F-150.
• Reconnect the electrical connector and secure the coil with bolts.

4. Check Fuel Injector

• Tools Required: Noid light or multimeter
• Disconnect the fuel injector connector.
• Test for voltage at the injector connector with the ignition on (do not start the engine).
• If there is no voltage, trace the wiring back to the engine control module (ECM) for issues.
• If the injector is faulty, remove it and replace it with a new one, ensuring proper sealing with an O-ring.

5. Reassemble and Reconnect

• Reconnect all electrical connectors and components removed during the repair.
• Reconnect the battery.