how to fix the P0301 code on my Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a flat surface, and the engine is cool.
• Disconnect the negative battery terminal to avoid electrical shorts.

2. Inspect and Replace Ignition Components

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the engine cover (if applicable) to gain access to the ignition components.
• Remove the ignition coil from cylinder 1:
  • Unplug the electrical connector.
  • Remove the bolts holding the coil in place and lift it out.
• Inspect the spark plug:
  • Use a spark plug socket to remove the spark plug from cylinder 1.
  • Check for wear, fouling, or damage. Replace if necessary with a spark plug that meets OEM specifications.
• Install the new spark plug and torque to the manufacturer's specification (typically around 13-15 lb-ft).
• Apply dielectric grease to the ignition coil connector.
• Reinstall the ignition coil and secure it with bolts.

3. Check and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, fuel line disconnect tool.
• Disconnect the fuel line and electrical connector from the fuel injector for cylinder 1.
• Remove the fuel injector using a fuel injector removal tool.
• Inspect the injector for clogs or damage. Replace if necessary with an OEM part.
• Reinstall the new fuel injector, ensuring it is seated correctly.

4. Compression Test (if misfire persists)

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine and record the compression reading. It should be within the manufacturer's specified range (consult the service manual).
• If compression is low, further diagnosis may be needed for internal engine issues.