how to troubleshoot P0301 code on my Ford Mustang S550 (2015-2023)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to avoid electrical shock.
• Ensure the engine is cool before proceeding.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket wrench to remove the spark plug for cylinder 1.
• Inspect the old spark plug for wear or carbon deposits.
• Install the new spark plug, ensuring it is torqued to the manufacturer’s specifications (typically around 13-15 lb-ft).
• Reattach the ignition coil.

3. Inspect and Replace Ignition Coil

• Remove the ignition coil for cylinder 1 by unscrewing it and disconnecting the electrical connector.
• Inspect the ignition coil for any cracks or damage.
• If faulty, replace it with a new ignition coil, ensuring it is securely fastened and the connector is properly attached.

4. Check and Clean Fuel Injector

• Disconnect the fuel injector connector for cylinder 1.
• Remove the fuel injector using a fuel injector puller if necessary.
• Inspect the fuel injector for clogs; clean or replace it as needed.
• Reinstall the injector, ensuring a proper seal and reconnect the electrical connector.

5. Perform Compression Test

• Insert the compression gauge into the spark plug hole for cylinder 1.
• Crank the engine and record the compression reading.
• Compare the result with manufacturer specifications; replace or repair if compression is below spec.