how do I fix a P0301 code on my Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, compression tester, multimeter.
• Safety Warnings: Disconnect the battery before working on electrical components.

2. Replace Spark Plug

1. Remove the engine cover if necessary.
2. Disconnect the spark plug wire or ignition coil connector from cylinder 1.
3. Use a spark plug socket to remove the old spark plug.
4. Inspect the spark plug for wear; replace it with a new one if necessary.
5. Ensure the new spark plug is gapped correctly (refer to manufacturer's specifications).
6. Install the new spark plug and torque to manufacturer specifications (usually around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

1. Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
2. Inspect the coil for signs of damage or corrosion.
3. If faulty, replace with a new ignition coil, ensuring it is properly aligned and seated.
4. Reconnect the ignition coil connector.

4. Test Fuel Injector

1. Disconnect the fuel injector connector for cylinder 1.
2. Use a multimeter to check for continuity; if there is no continuity, replace the injector.
3. If functional, clean the injector using a fuel injector cleaning kit or replace it if clogged.

5. Perform Compression Test

1. Remove the spark plug from cylinder 1.
2. Insert the compression tester into the spark plug hole.
3. Crank the engine and read the compression value.
4. If the compression is below specifications (usually around 120-180 psi), further investigation of internal engine components may be necessary.