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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow engine to cool before proceeding.

2. Replace Spark Plug

• Remove the engine cover if applicable.
• Use a socket wrench to remove the spark plug from cylinder 1.
• Inspect the spark plug for signs of fouling or damage; replace with a new spark plug (OEM recommended).
• Torque the spark plug to the manufacturer's specification (typically around 13-15 lb-ft).
• Reinstall the engine cover if removed.

3. Inspect and Replace Ignition Coil

• Remove the ignition coil from cylinder 1 by disconnecting the electrical connector and unscrewing the mounting bolts.
• Inspect for cracks or corrosion; replace if necessary with an OEM ignition coil.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Check and Clean Fuel Injector

• Access the fuel injector for cylinder 1 (may require removal of the intake manifold).
• Remove the fuel injector from the rail and inspect for clogs or damage.
• Use a fuel injector cleaning solution to clean the injector.
• Reinstall the injector and ensure all connections are secure.

5. Perform Compression Test

• Insert a compression gauge into the spark plug hole of cylinder 1.
• Crank the engine and record the compression reading. Compare with specifications (typically 120-180 psi).
• If compression is low, consider further investigation into potential internal engine issues.