how to fix the check engine light code P0301 on my Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• 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 bolt and carefully pull the coil out.
  4. Remove the spark plug using a spark plug socket.
  5. Inspect the spark plug for wear or damage; replace if necessary.
  6. Install the new spark plug and torque it to manufacturer specifications (typically around 13-15 lb-ft).
  7. Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the ignition coil was found defective during diagnostics, replace it.
  2. Remove the ignition coil as described in the previous step.
  3. Install the new ignition coil ensuring a snug fit.
  4. Reconnect the ignition coil connector.

4. Inspect and Replace Fuel Injector (if necessary)

• Sub-steps:
  1. If the fuel injector is suspected of malfunctioning, disconnect the fuel pump relay and relieve fuel pressure.
  2. Remove the intake manifold (if needed) for access to the injector.
  3. Disconnect the electrical connector from the fuel injector and remove it.
  4. Install the new fuel injector and reconnect the electrical connector.
  5. Reassemble the intake manifold.

5. Final Steps

• Reconnect the battery.
• Start the engine and allow it to idle for a few minutes to ensure no leaks.