how to fix P0301 code in Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery cable to prevent electrical shocks.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Unplug the electrical connector.
  • Remove the mounting bolts using a socket set.
• Take out the spark plug using a spark plug socket. Inspect for wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one (OEM recommended gap: 0.054 inches).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil (if needed)

• If the spark plug is in good condition, check the ignition coil:
  • Use a multimeter to check the coil’s primary and secondary resistance according to specifications.
• Replace the ignition coil if it shows signs of failure or if resistance is out of spec.

4. Clean or Replace Fuel Injector

• Remove the fuel injector from cylinder 1:
  • Relieve fuel pressure by removing the fuel pump fuse and running the engine until it stalls.
  • Disconnect the electrical connector and fuel line (use caution with fuel).
  • Remove the injector retaining clips and pull out the injector.
• Clean the injector using an injector cleaning kit or replace it if damaged.

5. Perform Compression Test

• Reinstall the spark plug temporarily and perform a compression test on cylinder 1:
  • Remove the ignition coil and disable fuel injection to avoid flooding.
  • Use a compression gauge and crank the engine to obtain the reading.
• If the compression is low, investigate potential internal engine issues such as valve problems or head gasket failure.

6. Check for Vacuum Leaks

• Inspect all vacuum hoses and the intake manifold for leaks:
  • Use a smoke machine or carburetor cleaner to identify leaks while the engine runs.
• Repair any identified leaks to ensure proper air mixture for cylinder 1.