how to resolve the P0301 code on my Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather tools and parts necessary for the repair.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable (use a socket set).
• Disconnect the ignition coil wiring harness from the coil on cylinder 1.
• Remove the ignition coil using a socket set (torque specifications: 10-15 ft-lbs).
• Remove the spark plug using a spark plug socket (torque specifications: 13-15 ft-lbs).
• Inspect the spark plug for wear; replace it if necessary with a new spark plug that meets OEM specifications.

3. Check and Replace Ignition Coil

• Inspect the ignition coil for signs of wear or damage.
• If faulty, replace the ignition coil with a new one that matches OEM specifications. Ensure proper connection of the wiring harness.

4. Inspect Fuel Injector

• Disconnect the fuel injector connector from cylinder 1.
• Use a multimeter to test the injector resistance (should be within the manufacturer’s specifications).
• If the injector is faulty, remove it using appropriate tools (ensure the fuel system is depressurized) and replace it with a new one.

5. Perform Compression Test

• Remove the spark plug from cylinder 1.
• Insert a compression gauge into the spark plug hole and crank the engine.
• Compare the compression reading to the specifications for your engine. If low, further diagnostics may be needed for internal engine issues.