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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety while working.
• Allow the engine to cool if it has been running.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the ignition coil from cylinder 1 by unscrewing the bolts and disconnecting the electrical connector.
  2. Remove the spark plug using a spark plug socket and ratchet.
  3. Inspect the spark plug for wear or damage. Replace it with a new spark plug if necessary, ensuring it is gapped correctly to manufacturer specifications.
  4. Reinstall the ignition coil over the new spark plug, securing it with bolts and reconnecting the electrical connector.

3. Check and Replace Ignition Coil

• Sub-steps:
  1. If the spark plug is in good condition, test the ignition coil using a multimeter to check for proper resistance.
  2. If the ignition coil is faulty, remove it and install a new ignition coil compatible with the 2024 Mustang S650.
  3. Reconnect the electrical connector and ensure it is secured.

4. Inspect Fuel Injector

• Sub-steps:
  1. If the misfire persists, remove the fuel injector from cylinder 1 by disconnecting the electrical connector and unscrewing it.
  2. Inspect the injector for clogs or damage. Clean or replace the injector as needed.
  3. Reinstall the injector and reconnect the electrical connector.

5. Conduct a Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1 again for access.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine and record the compression reading. Compare it to manufacturer specifications.
  4. If the compression is low, further inspection of engine internals may be required.