how do I fix P0301 code in my Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Gather tools: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, noid light, safety glasses, and gloves.
• Disconnect the battery to prevent electrical shorts.

2. Replace Spark Plug

• 1.1 Remove the engine cover if applicable using a socket set.
• 1.2 Disconnect the ignition coil connector for cylinder 1.
• 1.3 Unbolt the ignition coil from the cylinder head using a socket.
• 1.4 Remove the old spark plug using a spark plug socket and ratchet.
• 1.5 Install the new spark plug (ensure it’s gapped correctly as per manufacturer specs) and torque it to 13 lb-ft (18 Nm).
• 1.6 Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if needed)

• 3.1 If the ignition coil is damaged or malfunctioning, remove it as described above.
• 3.2 Install the new ignition coil, ensuring secure fitment and connection.
• 3.3 Reconnect the battery and clear the trouble codes using the OBD-II scanner.

4. Check Fuel Injector (if needed)

• 4.1 If the injector is suspected to be faulty, check its operation using a noid light by connecting it to the injector connector.
• 4.2 If no signal is detected, inspect the wiring and connectors for issues. Replace the injector if it is faulty.
• 4.3 Reinstall the connector and ensure everything is secured.