why does my Ford F-150 12th Generation (2009-2014) keep throwing P0301 code

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down if it has been running.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts (usually a 10mm socket).
• Carefully pull the ignition coil out of the spark plug well.
• Remove the spark plug using a spark plug socket.
• Inspect the old spark plug for wear; replace if necessary.
• Install a new spark plug (ensure correct gap; typically 0.054 inches for F-150).
• Reinstall the ignition coil and torque to manufacturer specifications (usually around 7-10 ft-lbs).

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil showed signs of damage, replace it with a new one.
• Ensure the connector is clean; apply dielectric grease to the connector before reinstallation.
• Reinstall the ignition coil over the spark plug and secure it with the retaining bolts.

4. Check and Replace Fuel Injector (if necessary)

• If the injector is not functioning properly, remove it from the fuel rail (disconnect fuel lines and wiring).
• Install a new fuel injector and ensure it is securely connected.
• Reconnect any disconnected fuel lines and wiring.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear all codes and check for any new codes after repairs.