how to fix the P0301 code in my Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool and disconnect the battery.
• Raise the vehicle using a jack and secure it with jack stands.

2. Inspect and Replace Spark Plug

1. Remove the ignition coil from cylinder 1:
   • Disconnect the electrical connector.
   • Remove the retaining bolts using a socket set.
2. Pull out the spark plug using a spark plug socket.
3. Inspect the spark plug for signs of wear (e.g., fouling, damage).
4. If worn, replace with a new spark plug (check gap specifications).
5. Reinstall the spark plug and torque to manufacturer specifications (typically around 13 lb-ft).

3. Inspect and Replace Ignition Coil

1. Check the ignition coil visually for cracks or signs of damage.
2. If faulty, install a new ignition coil by reversing the removal process.
3. Ensure the electrical connector is securely attached.

4. Check and Clean Fuel Injector

1. Disconnect the fuel injector connector.
2. Remove the fuel rail if necessary, following the manufacturer's procedure.
3. Inspect the fuel injector for blockages or leaks.
4. Clean the injector using a fuel injector cleaner or replace if defective.
5. Reinstall the fuel rail and reconnect the fuel injector connector.

5. Test and Repair Vacuum Leaks

1. Inspect all vacuum hoses connected to the intake manifold.
2. Replace any cracked or damaged hoses.
3. Use a smoke machine or carburetor cleaner spray to locate any remaining leaks.