how to resolve P0301 code in my Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the spark plug wire or ignition coil connector.
• Use the spark plug socket to remove the spark plug from cylinder 1.
• Inspect the spark plug for wear, carbon build-up, or damage.
• If damaged, replace it with a new spark plug, ensuring it is gapped according to manufacturer specifications (typically 0.054 inches).
• Torque the new spark plug to the manufacturer’s specified value (usually around 13 lb-ft).

3. Test and Replace Ignition Coil

• Tools Required: Multimeter, socket set
• Remove the ignition coil from cylinder 1 by unbolting it and disconnecting the electrical connector.
• Use a multimeter to check the primary and secondary resistance of the coil; refer to the service manual for specific values.
• If the coil is faulty, replace it with a new ignition coil compatible with the Ford F-150.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, socket set
• Remove the fuel injector from cylinder 1 carefully, ensuring not to damage the O-rings.
• Inspect the injector for clogs or leaks.
• Clean the fuel injector using a suitable injector cleaner or replace it if necessary.
• Reinstall the injector and ensure proper sealing.

5. Verify Engine Compression

• Tools Required: Compression tester
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare the reading to the manufacturer’s specifications (usually around 125-175 psi). If low, further investigation into engine internals may be needed.