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

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Tools Required: Socket set, torque wrench, OBD-II scanner, multimeter, compression tester, spark plug socket, and noid light.
• Safety Warnings: Disconnect the battery before starting work on the ignition system to avoid electrical shock.

2. Replace Spark Plug

• Remove the engine cover if applicable to access the spark plug.
• Use a spark plug socket to carefully unscrew and remove the spark plug from cylinder 1.
• Inspect the old spark plug for signs of wear or damage.
• Install a new spark plug, ensuring it is gapped correctly per manufacturer specifications (usually around 0.028-0.032 inches for Ford engines).
• Torque the spark plug to manufacturer specifications (typically around 13 lb-ft).

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil for cylinder 1.
• Remove the mounting bolts securing the ignition coil and lift it out.
• Install a new ignition coil, ensuring it is seated properly and reconnect the electrical connector.
• Torque bolts to manufacturer specifications (usually around 7 lb-ft).

4. Check Fuel Injector

• Use a noid light to check the injector’s electrical signal. If there's no signal, further investigate the wiring harness.
• If the injector is faulty, remove the fuel rail to access the injector.
• Replace with a new injector and reassemble the fuel rail.

5. Reassemble and Test

• Reconnect the battery.
• Start the engine and check for any misfire codes using the OBD-II scanner.
• Let the engine run for a few minutes to ensure it is operating smoothly.