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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shock.
• Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plug

• Remove the ignition coil covering cylinder 1.
• Unplug the ignition coil connector, then remove the coil using a socket wrench.
• Remove the spark plug with a spark plug socket and inspect it for damage or excessive wear.
• If necessary, replace the spark plug with a new one that meets OEM specifications (e.g., Motorcraft SP-534).
• Reinstall the ignition coil and reconnect the electrical connector.

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, inspect the ignition coil for cracks or corrosion.
• If defective, replace the ignition coil with a new OEM part.
• Torque the ignition coil to manufacturer specifications (usually around 10-15 lb-ft).
• Reconnect the ignition coil connector.

4. Check and Replace Fuel Injector

• Remove the fuel rail if necessary to access the injector for cylinder 1.
• Disconnect the fuel injector connector and remove it from the rail.
• Inspect the injector for clogs or damage.
• Replace with a new injector if it is faulty, ensuring the new injector matches the OEM part.
• Reinstall the fuel rail and reconnect the injector connector.

5. Perform Compression Test

• Use a compression gauge to check the compression in cylinder 1.
• If the compression is below specifications (typically around 120 psi), further engine diagnostics are required.