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

Solution

1. Preparation

• Gather tools and parts required for repair.
• Disconnect the negative battery terminal to prevent electrical shock.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

• Remove the ignition coil by unscrewing the retaining bolt and pulling it straight out.
• Use a spark plug socket to unscrew and remove the spark plug from cylinder 1.
• Inspect the old spark plug for damage and ensure the gap is correct (consult specifications).
• Install a new spark plug, ensuring it is properly gapped.
• Reinstall the ignition coil and secure with the retaining bolt.

3. Test/Replace Ignition Coil

• If the ignition coil is suspected to be faulty, test it using an ohmmeter. The primary and secondary resistance values should match the specifications in the service manual.
• If it does not meet specifications, replace the ignition coil with a new one.
• Reassemble the ignition components and reconnect the negative battery terminal.

4. Check/Replace Fuel Injector

• If the fuel injector is suspected, disconnect the electrical connector and fuel line.
• Remove the fuel injector using appropriate tools.
• Inspect for clogs or electrical issues.
• Replace the fuel injector if necessary and reassemble the components.

5. Compression Test (if needed)

• If previous steps do not resolve the issue, perform a compression test on cylinder 1.
• If the compression is low, further diagnosis may be needed to check for internal engine issues such as valve problems or head gasket failure.