how to troubleshoot a P0301 code in my Ford Mustang S650 (2024-Present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool before working on the ignition components.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 using a socket set.
• Unplug the electrical connector from the ignition coil.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for signs of wear or damage; replace if necessary.
• Install a new spark plug (specifications: gap of 0.030-0.035 inches).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Test or Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil using a multimeter to check for proper resistance values.
• If the coil is faulty, replace it with a new one that meets OEM specifications.
• Ensure to torque the ignition coil bolts to the manufacturer's specified torque (typically around 7-9 lb-ft).

4. Check Fuel Injector

• Disconnect the fuel injector electrical connector and remove the injector from the rail.
• Inspect the injector for clogs or leaks.
• If clogged, clean the injector with an appropriate solvent or replace it if necessary.
• Reinstall the fuel injector, ensuring it seats properly.

5. Perform Compression Test

• Use a compression gauge to measure the compression in cylinder 1.
• Ensure the reading is within the manufacturer's specified range; if not, further investigation is required for possible internal engine issues.