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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface, and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plug and Ignition Coil for Cylinder 1

• Tools Required: Socket set, torque wrench, dielectric grease, spark plug socket
• Remove the engine cover if applicable.
• Locate cylinder 1 (typically the front-most cylinder on the driver's side).
• Remove the ignition coil by unscrewing the bolts and gently pulling it out.
• Remove the spark plug using the spark plug socket.
• Inspect the old spark plug for signs of wear (e.g., carbon buildup, erosion).
• Install the new spark plug, ensuring it is torqued to manufacturer specifications (typically around 13-15 lb-ft).
• Apply dielectric grease to the inside of the ignition coil boot and reinstall the ignition coil, securing it with bolts.

3. Inspect and Replace Fuel Injector (if necessary)

• Tools Required: Fuel line removal tool, ratchet set
• Disconnect the fuel line leading to the fuel injector on cylinder 1.
• Remove the fuel injector connector.
• Remove the retaining clips and pull the fuel injector out.
• Inspect for clogs or damage. Replace with a new fuel injector if necessary.
• Reinstall the new or cleaned injector, securing it with clips and reconnecting the fuel line and connector.

4. Perform a Compression Test (if needed)

• Tools Required: Compression tester
• Remove the spark plug from cylinder 1.
• Insert the compression tester into the spark plug hole.
• Crank the engine for a few seconds and record the reading.
• Compare to manufacturer specifications; if low, further investigation of the engine internals may be necessary.