how to fix P0301 misfire code in my Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the battery before starting any electrical work.

2. Replace Spark Plug

1. Remove the engine cover if applicable.
2. Disconnect the ignition coil connector from the spark plug.
3. Unbolt the ignition coil using a socket set and remove it.
4. Use a spark plug socket to remove the old spark plug.
5. Inspect the spark plug for wear; replace it with a new one if necessary.
6. Apply anti-seize compound on the threads of the new spark plug.
7. Torque the new spark plug to the manufacturer’s specifications (typically around 13-15 lb-ft).
8. Reinstall the ignition coil and connector.

3. Replace Ignition Coil

1. If the spark plug replacement does not resolve the issue, remove the ignition coil from cylinder 1.
2. Install a new ignition coil in place of the old one.
3. Reconnect the ignition coil connector securely.

4. Inspect and Clean Fuel Injector

1. Disconnect the fuel injector connector.
2. Remove the fuel rail if necessary to access the injector.
3. Clean the fuel injector using a suitable injector cleaner.
4. Reinstall the fuel injector and reconnect the fuel rail and connector.

5. Compression Test

1. If misfire persists, perform a compression test on cylinder 1.
2. Remove the spark plug and attach the compression gauge.
3. Crank the engine and record the compression reading.
4. Compare the reading to manufacturer specifications; if low, further engine diagnostics are required.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Spark plug socket
• Compression gauge
• Fuel injector cleaner
• Anti-seize compound

Parts Required:

• Spark plug
• Ignition coil
• Fuel injector (if needed)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow the engine to cool before working on the engine components.