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 battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the ignition coil and the spark plug using the socket set.
• Inspect the spark plug for wear or carbon buildup; replace if necessary.
• Set the gap on the new spark plug according to manufacturer specifications.
• Install the new spark plug and torque it to the recommended specifications (typically around 13 lb-ft).
• Reattach the ignition coil.

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set, multimeter.
• Remove the ignition coil from cylinder one.
• Test the ignition coil with a multimeter for proper resistance.
• If faulty, replace with a new ignition coil and ensure it is securely attached.

4. Inspect Fuel Injector

• Tools Required: Noid light.
• Disconnect the fuel injector connector.
• Use a noid light to check for proper electrical signal to the injector.
• If there’s no signal, inspect wiring; if the injector is faulty, replace it.
• Reconnect the fuel injector connector.

5. Compression Test

• Tools Required: Compression gauge.
• Remove the spark plug from cylinder one.
• Install the compression gauge and crank the engine.
• Compare the compression reading to the manufacturer’s specifications; if low, further engine diagnostics are necessary.