how to fix P0301 code on Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off and cool.
• Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect and Replace Ignition Components

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the ignition coil connector on cylinder 1.
  3. Remove the ignition coil by unscrewing the retaining bolts and pulling it out.
  4. Inspect the spark plug condition; replace if fouled or worn.
     • Spark plug gap should be set to manufacturer specifications (typically around 0.028-0.060 inches).
  5. Install a new spark plug and torque it to the manufacturer’s specifications (usually around 13-15 lb-ft).
  6. Reinstall the ignition coil, ensuring it is seated properly and reconnect the connector.

3. Inspect Fuel Injectors

• Sub-steps:
  1. Locate the fuel injector rail and remove the retaining clips.
  2. Remove the fuel injector for cylinder 1.
  3. Inspect the injector for clogs or damage; replace if necessary.
  4. Reinstall the fuel injector, ensuring proper seating and secure with clips.

4. Check for Vacuum Leaks

• Sub-steps:
  1. Visually inspect vacuum hoses connected to the intake manifold for cracks or disconnections.
  2. Use a smoke machine if available to check for leaks around the intake manifold.
  3. Replace any damaged hoses or seals found during inspection.

5. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Connect a compression gauge to the spark plug hole.
  3. Crank the engine several times and record the maximum pressure reading.
  4. Compare the reading to manufacturer specifications (typically around 150-200 psi).
  5. If compression is low, further investigation into valve seals or piston rings may be necessary.