what does it mean if my Ford Mustang S550 (2015-2023) shows a P0301 code

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.

2. Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 1.
• Use the spark plug socket to remove the old spark plug.
• Inspect the new spark plug for proper gap size (typically 0.030 inches for a Mustang).
• Install the new spark plug and torque it to the manufacturer’s specifications (usually around 12-15 lb-ft).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil (if necessary)

• If the ignition coil was found faulty, remove the old ignition coil from cylinder 1.
• Install the new ignition coil and ensure it is securely connected.
• Clear the P0301 code using the OBD-II scanner.

4. Inspect and Clean/Replace Fuel Injector (if necessary)

• Disconnect the fuel injector connector.
• Remove the fuel rail to access the injector.
• Inspect the injector for clogs; if clogged, clean with a specialized fuel injector cleaner or replace with a new one.
• Reassemble the fuel rail and reconnect the injector connector.

5. Final Checks

• Reconnect the negative battery terminal.
• Start the engine and let it warm up, monitoring for any check engine lights.