how to fix P0301 code in Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, compression tester, fuel pressure gauge, multimeter.
• Ensure the vehicle is parked on a flat surface and the engine is cool. Disconnect the negative battery terminal to avoid electrical issues.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover (if applicable) using a socket set.
  2. Disconnect the spark plug wire and remove the spark plug using a spark plug socket.
  3. Inspect the spark plug for wear (check for carbon buildup, discoloration, or damage). Replace if necessary.
  4. Gap the new spark plug to manufacturer specifications (usually around 0.030-0.035 inches).
  5. Install the new spark plug and reconnect the spark plug wire.

3. Check and Replace Ignition Coil

• Sub-steps:
  1. Remove the ignition coil for cylinder 1 by unscrewing the retaining bolts.
  2. Inspect the ignition coil for cracks or damage.
  3. Test the ignition coil with a multimeter to ensure it operates within specifications.
  4. Replace the ignition coil if it fails the test or is damaged.
  5. Reinstall the ignition coil and secure it in place.

4. Inspect and Clean Fuel Injector

• Sub-steps:
  1. Remove the fuel rail (if necessary) to access the fuel injector for cylinder 1.
  2. Disconnect the electrical connector from the fuel injector.
  3. Remove the fuel injector from the rail and inspect for clogs or damage.
  4. Clean the injector using a fuel injector cleaner or replace it if clogged or damaged.
  5. Reinstall the fuel injector, ensuring seals are intact, and reconnect the electrical connector.

5. Conduct Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine and note the compression reading.
  4. Compare the reading to manufacturer specifications. If low, further investigation into valve seals or piston rings may be needed.