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

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, compression tester, vacuum gauge.
• Disconnect the negative battery terminal to prevent electrical shocks.
• Allow the engine to cool down before working on any components.

2. Inspect and Replace Spark Plug and Ignition Coil

1. Remove the engine cover if applicable.
2. Disconnect the electrical connector from the ignition coil on cylinder 1.
3. Remove the ignition coil by unbolting it with a socket set.
4. Extract the spark plug using a spark plug socket.
5. Inspect the spark plug for wear and carbon buildup; replace if necessary.
   • Note: Use a spark plug that meets OEM specifications (typically Motorcraft SP-546 or equivalent).
6. Install the new spark plug by hand, then torque to the manufacturer’s specifications (usually around 13 lb-ft).
7. Install the ignition coil and reconnect the electrical connector, ensuring it clicks into place.

3. Inspect and Replace Fuel Injector

1. If the ignition components are functioning correctly, proceed to inspect the fuel injector.
2. Disconnect the electrical connector and fuel line from the injector.
3. Remove the retaining clips and pull the fuel injector out of the intake manifold.
4. Inspect the injector for clogs or damage.
5. Replace the fuel injector with a new one that meets OEM specifications.
6. Reinstall the injector, ensuring it is securely seated and reattach the fuel line and electrical connector.

4. Perform Compression Test

1. Insert the compression tester into the spark plug hole of cylinder 1.
2. Crank the engine for several seconds and record the compression reading.
3. Compare the reading to the manufacturer’s specifications (typically around 150-200 psi).
4. If the compression is low, further investigation for mechanical issues (e.g., valve problems, piston rings) is needed.

5. Final Checks

1. Reconnect the negative battery terminal.
2. Start the engine and observe for any abnormal sounds or performance issues.
3. Clear the trouble codes using the OBD-II scanner and take the vehicle for a test drive.