how to fix P0301 misfire code on my Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting the repair.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the engine cover if applicable.
• Disconnect the ignition coil connector from cylinder 1.
• Remove the ignition coil bolts and gently pull the coil out.
• Using a spark plug socket, remove the old spark plug.
• Inspect the spark plug for wear or damage; replace if necessary.
• Apply a small amount of dielectric grease to the new spark plug threads and install it, torqueing to the manufacturer’s specifications (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Inspect/Replace Ignition Coil

• If the spark plug replacement doesn’t resolve the issue, replace the ignition coil for cylinder 1.
• Follow the same steps as above for removing and installing the ignition coil, using a new coil as a replacement.

4. Clean or Replace Fuel Injector

• If the issue persists, inspect and clean the fuel injector for cylinder 1 or replace it if necessary.
• Disconnect the fuel injector connector.
• Remove the fuel rail bolts to access the injector.
• Carefully pull the injector out and clean it with an appropriate injector cleaner or replace it with a new one.
• Reinstall the fuel injector and ensure the rail is securely fastened.

5. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use an OBD-II scanner to clear any stored trouble codes.