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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts during repairs.

2. Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Unscrew the coil mounting bolt using a socket wrench.
  • Gently pull the coil upwards to detach it from the spark plug.
• Remove the spark plug using a spark plug socket:
  • Turn counterclockwise to loosen and remove the old spark plug.
• Install the new spark plug:
  • Apply anti-seize compound to the threads (optional).
  • Torque the new spark plug to 13 lb-ft (17.5 Nm).
• Reinstall the ignition coil:
  • Ensure proper alignment and push down firmly.
  • Reinstall the mounting bolt and tighten it to specifications.

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil is found faulty during diagnostics:
  • Remove the defective coil as described in the previous step.
  • Install the new ignition coil in reverse order.
  • Ensure the connection is secure.

4. Fuel Injector Testing and Replacement (if necessary)

• If the fuel injector to cylinder 1 is suspected faulty:
  • Disconnect the fuel injector connector.
  • Remove the fuel rail according to manufacturer specifications.
  • Replace the fuel injector for cylinder 1.
  • Reinstall the fuel rail and reconnect the injector connector.

5. Reassembly

• Reconnect the negative battery terminal.
• Start the engine and monitor for any issues.