how to fix P0301 code in Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Compression tester
• Fuel pressure gauge
• Vacuum gauge

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 1:
  • Disconnect the electrical connector.
  • Remove the mounting bolts using a socket wrench.
• Extract the spark plug:
  • Use a spark plug socket to remove the spark plug.
  • Inspect for fouling, wear, or damage.
• If faulty, replace the spark plug with a new one, torquing it to the manufacturer's specifications (typically around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Examine the ignition coil for cylinder 1 for any signs of damage or wear.
• If necessary, replace it:
  • Install the new ignition coil in place.
  • Secure it with the mounting bolts and reconnect the electrical connector.

4. Compression Test

• Attach the compression tester to the spark plug hole of cylinder 1.
• Crank the engine several times to get a reading.
• Ensure compression is within specifications (typically around 120-200 psi).
• If compression is low, further investigation into internal engine components may be required.

5. Verify Fuel Injector Operation

• Use a fuel pressure gauge to check fuel pressure at the fuel rail.
• If pressure is low, inspect the fuel pump and filter.
• For injector issues, perform a resistance test on the injector's electrical connector. Replace if faulty.

6. Check for Vacuum Leaks

• Use a vacuum gauge to check for leaks in the intake manifold and throttle body.
• If leaks are found, replace gaskets or seals as necessary.