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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, compression tester, vacuum gauge, torque wrench.
• Disconnect the negative battery terminal to ensure safety before starting repairs.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Locate cylinder 1 spark plug (typically the front-left cylinder when facing the engine).
  3. Use a socket wrench to carefully unscrew the spark plug.
  4. Inspect the old spark plug; if worn or damaged, replace it with a new one (recommended gap should be 0.054 inches).
  5. Install the new spark plug and torque it to the manufacturer's specification (typically around 13 lb-ft).

3. Replace Ignition Coil

• Sub-steps:
  1. Unplug the electrical connector from the ignition coil on cylinder 1.
  2. Remove the bolt securing the ignition coil using a socket wrench.
  3. Carefully pull the ignition coil out of the spark plug well.
  4. Install the new ignition coil, securing it with the bolt and reconnecting the electrical connector.

4. Inspect and Clean Fuel Injector

• Sub-steps:
  1. Remove the fuel rail assembly if necessary to access the fuel injector for cylinder 1.
  2. Check for any visible fuel leaks or blockages.
  3. Clean the fuel injector using an appropriate fuel injector cleaner or replace it if it's faulty.
  4. Reassemble the fuel rail and ensure all connections are secure.

5. Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine several times and note the compression reading; it should be within the manufacturer's specifications (usually around 120-200 psi).
  4. If compression is low, further investigation is needed for potential internal engine issues.