how to fix the P0301 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.
• Ensure the engine is cool before starting any work.

2. Inspect and Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Using a socket wrench, remove the spark plug from cylinder 1.
  3. Inspect the spark plug for signs of wear or fouling.
  4. If damaged, replace it with a new spark plug (ensure it matches OEM specifications).
  5. Torque the new spark plug to the manufacturer’s specifications (usually around 13-15 lb-ft).

3. Test and Replace Ignition Coil

• Sub-steps:
  1. Disconnect the electrical connector from the ignition coil for cylinder 1.
  2. Remove the ignition coil by unscrewing it from the cylinder head.
  3. Swap the ignition coil with another cylinder to see if the misfire follows the coil.
  4. If the misfire moves, replace the ignition coil with a new one (ensure it matches OEM specifications).
  5. Reconnect the electrical connector and secure the coil in place.

4. Inspect and Clean Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector from cylinder 1.
  2. Remove the fuel rail if necessary (follow service manual for specific steps).
  3. Inspect the injector for dirt or clogs; clean with appropriate injector cleaner.
  4. If cleaning does not resolve the issue, replace the fuel injector with a new one.
  5. Reassemble the fuel rail and reconnect all electrical connectors.

5. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine a few times and record the compression reading.
  4. Compare the reading to manufacturer specifications (usually around 100-200 psi).
  5. If compression is low, further investigate potential internal engine issues (valves, head gasket, etc.).