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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and that the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 1 (typically the front left cylinder).
• Use a socket to remove the spark plug.
• Inspect the spark plug for wear, fouling, or damage. Replace if necessary.
• Install the new spark plug and torque it to the manufacturer’s specifications (usually around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set
• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the mounting bolts and lift the ignition coil out.
• Replace it with a new ignition coil.
• Reconnect the electrical connector.

4. Test Fuel Injector

• Tools Required: Fuel pressure gauge, multimeter
• Disconnect the fuel injector connector for cylinder 1.
• Use a multimeter to check for voltage at the connector while cranking the engine.
• If no voltage is present, investigate the wiring or PCM issues. If there is voltage, check the injector for clogs or faulty operation.
• Replace the fuel injector if necessary.

5. Perform Compression Test

• Tools Required: Compression tester
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine and read the compression value.
• Compare to manufacturer specifications; if low, further engine diagnostics may be needed.