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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety.
• Allow the engine to cool down if it was running.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug gap tool.
• Remove the ignition coil cover to access cylinder 1.
• Unplug the ignition coil connector.
• Remove the ignition coil using a socket.
• Using a spark plug socket, remove the spark plug from cylinder 1.
• Inspect the spark plug for signs of wear (e.g., carbon buildup, cracks).
• If necessary, install a new spark plug, ensuring it is gapped correctly (typically around 0.030 inches for Ford engines).
• Reinstall the ignition coil and connector.

3. Check and Replace Ignition Coil

• If the spark plug was not the issue, proceed to the ignition coil.
• Tools Required: Socket set.
• Remove the ignition coil from cylinder 1 as described above.
• Test the ignition coil with a multimeter (check for proper resistance according to the specifications).
• If the coil is defective, replace it with a new one.
• Reinstall the coil and ensure it is secured properly.

4. Test and Replace Fuel Injector

• If the ignition coil is functioning correctly, inspect the fuel injector.
• Tools Required: Fuel injector removal tool.
• Disconnect the fuel line (use safety goggles and a rag to catch any fuel).
• Remove the fuel injector from cylinder 1.
• Test the injector’s resistance with a multimeter to ensure it is within specification.
• If faulty, replace the fuel injector with a new one.
• Reinstall the fuel line and ensure there are no leaks.

5. Final Checks

• Reconnect the battery.
• Clear any diagnostic trouble codes using the OBD-II scanner.
• Start the engine and check for smooth operation.