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

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Disconnect the negative terminal of the battery to ensure safety during the repair.
• Ensure the engine is cool before starting any work.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector for cylinder 1.
  3. Remove the ignition coil by unbolting it and pulling it straight out.
  4. Use a spark plug socket to remove the spark plug from cylinder 1.
  5. Inspect the old spark plug and compare it with the manufacturer’s specifications.
  6. Install a new spark plug, ensuring it is gapped correctly to the manufacturer’s specifications (usually around 0.028-0.031 inches).
  7. Reinstall the ignition coil and reconnect the connector.

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. If the ignition coil was found defective, remove it as described above.
  2. Install a new ignition coil for cylinder 1.
  3. Ensure the coil is seated correctly and reconnect the electrical connector.

4. Clean or Replace Fuel Injector (if necessary)

• Sub-steps:
  1. If the fuel injector is clogged, remove it from the intake manifold.
  2. Clean the injector using a specialized fuel injector cleaner or replace it if severely clogged.
  3. Reinstall the injector and ensure all connections are secure.

5. Reassemble and Test

• Sub-steps:
  1. Reinstall any engine covers removed during the process.
  2. Reconnect the negative battery terminal.
  3. Start the engine and let it idle to ensure the repairs are successful.