how to fix P0301 misfire code in Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the ignition coil by unbolting it and disconnecting the electrical connector.
• Remove the spark plug using the spark plug socket.
• Inspect the spark plug for wear or carbon buildup; replace if necessary.
• Install the new spark plug, ensuring it is torqued to the manufacturer's specification (typically 13-15 ft-lbs).

3. Inspect and Replace Ignition Coil

• If the spark plug is functional, check the ignition coil.
• Tools Required: Socket set
• Remove the ignition coil and inspect for cracks or damage.
• Replace the ignition coil if any faults are found.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit (if applicable)
• Disconnect the fuel injector connector and remove the injector.
• Inspect the injector for clogs or damage; clean if necessary or replace if faulty.
• Reinstall the fuel injector and reconnect the electrical connector.

5. Address Vacuum Leaks

• Inspect hoses and gaskets around cylinder 1 for any leaks.
• Replace any damaged hoses or gaskets.
• Ensure that all connections are secure and free of cracks.

6. Reconnect Battery and Test

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle.
• Clear the P0301 code using the OBD-II scanner, then take the vehicle for a test drive.