how to fix P0301 code in Ford Mustang S550 (2015-2023)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter, fuel injector cleaner.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if necessary.
  2. Use a socket wrench to carefully unscrew the spark plug from cylinder 1.
  3. Inspect the old spark plug for signs of wear; replace if necessary.
  4. Install a new spark plug with the correct gap (typically 0.030 inches for most Ford engines).
  5. Torque the spark plug to the manufacturer’s specifications (usually around 12-15 lb-ft).

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. Disconnect the electrical connector from the ignition coil.
  2. Remove the bolt securing the ignition coil and pull it out carefully.
  3. Install the new ignition coil, ensuring it seats properly.
  4. Reconnect the electrical connector securely.

4. Clean or Replace Fuel Injector (if necessary)

• Sub-steps:
  1. Disconnect the fuel injector connector.
  2. Remove the fuel rail if applicable, and take out the fuel injector.
  3. Clean the injector with a fuel injector cleaner or replace it if clogged.
  4. Reinstall the injector and fuel rail, ensuring all seals are intact.

5. Compression Test (if needed)

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine for a few seconds and note the compression reading.
  4. Compare the reading to the manufacturer’s specifications (typically around 150 psi).