how do I fix P0301 code on my Ford Mustang S550 (2015-2023)

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a level surface, and the engine is cool.
• Disconnect the battery to prevent electrical shock.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket set to remove the spark plug from cylinder 1.
• Inspect the removed spark plug for signs of fouling or wear.
• Install a new spark plug, ensuring to gap it according to manufacturer specifications (typically around 0.030-0.035 inches).
• Torque the spark plug to 13 lb-ft.

3. Check and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil on cylinder 1.
• Remove the coil using a socket set.
• Inspect the coil for cracks or damage, and replace it if necessary.
• Reinstall the new ignition coil, ensuring it is seated properly.
• Reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Remove the fuel rail if necessary to access the injector.
• Inspect the fuel injector for clogs or leaks.
• If cleaning is needed, use a fuel injector cleaner; if damaged, replace the injector.
• Reinstall the fuel rail and reconnect the injector connector.

5. Check Compression

• Remove the spark plug from cylinder 1 again.
• Insert the compression tester into the spark plug hole.
• Crank the engine for a few seconds and record the compression reading.
• Compare the reading to manufacturer specifications (usually around 150-200 psi).
• If compression is low, further investigation of internal engine components may be necessary.