how to fix P0301 code for misfire on Ford Mustang S550 (2015-2023)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector from the spark plug on cylinder 1.
  3. Remove the ignition coil using a socket set.
  4. Extract the spark plug using a spark plug socket.
  5. Inspect the spark plug for wear; if damaged, replace it with a new spark plug that meets manufacturer specifications (typically Motorcraft SP-534).

Tools Required:

• Spark plug socket
• Ratchet and extensions
• Torque wrench

3. Inspect and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug is in good condition, test the ignition coil with a multimeter for proper resistance (refer to manufacturer specifications).
  2. If the ignition coil is faulty, replace it with a new one (typically Motorcraft DG-508).
  3. Reinstall the ignition coil and reconnect the connector.

4. Inspect and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Remove the fuel rail if necessary to access the injector.
  3. Inspect the injector for clogs; clean or replace the injector if needed (use a professional cleaning kit or replace with a new injector).

5. Reassemble and Reconnect

• Reinstall the fuel rail and reconnect all connectors.
• Reconnect the battery and start the engine.