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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil from cylinder 1 by unbolting it.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear or damage; replace if necessary.
• Ensure the new spark plug is gapped correctly according to specifications (typically 0.054 inches for F-150).
• Install the new spark plug and torque it to 13 lb-ft.
• Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Ignition Coil (if needed)

• If the spark plug was in good condition, proceed to inspect the ignition coil.
• If the ignition coil shows signs of damage or wear, replace it with a new one.
• Reinstall the ignition coil, ensuring it properly seats on the spark plug and reconnect the connector.

4. Inspect and Clean Fuel Injector

• Check the fuel injector for cylinder 1. If it’s clogged or malfunctioning, it may need cleaning or replacement.
• Use a fuel injector cleaner or replace the fuel injector if cleaning does not resolve the issue.
• Ensure proper installation and reconnect the fuel line.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle for a few minutes.
• Use the OBD-II scanner to clear the P0301 code from the system.