how to fix P0301 code in Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench
• Remove the engine cover if applicable.
• Use a spark plug socket to remove the spark plug from cylinder 1.
• Inspect the spark plug for wear or damage.
• If necessary, replace it with a new spark plug and torque to manufacturer specifications (typically 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set
• Remove the ignition coil for cylinder 1 by unbolting it from the engine.
• Inspect the coil for cracks or signs of wear.
• If defective, install a new ignition coil and ensure it is properly seated and secured.

4. Test and Clean Fuel Injector

• Tools Required: Fuel injector cleaning kit (optional), multimeter
• Disconnect the fuel injector connector for cylinder 1.
• Use a multimeter to check for continuity and proper voltage at the connector.
• If the injector is faulty, replace it; otherwise, clean it using a fuel injector cleaning kit.

5. Check for Vacuum Leaks

• Conduct a visual inspection around the intake manifold and throttle body for any signs of leaks.
• If necessary, use a smoke tester to identify any vacuum leaks.
• Replace any damaged hoses or gaskets as needed.

6. Perform Compression Test

• Tools Required: Compression tester
• Remove the spark plug for cylinder 1 and insert the compression tester.
• Crank the engine and record the compression reading.
• Compare the reading to manufacturer specifications; if low, further investigation into engine internals may be necessary.