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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Allow the engine to cool before beginning work.

2. Inspect and Replace Spark Plug

• Remove the ignition coil for cylinder 1:
  • Disconnect the electrical connector.
  • Remove the mounting bolts using a socket set.
• Remove the spark plug using a spark plug socket and ratchet.
• Inspect the spark plug for wear or fouling; replace if necessary.
• Install a new spark plug, tightening to manufacturer specifications (typically 13-20 lb-ft).

3. Inspect and Replace Ignition Coil

• If the spark plug is fine, check the ignition coil:
  • Test with a multimeter to ensure proper resistance.
  • If faulty, replace the ignition coil with a new one.
• Reinstall the ignition coil, securing it with bolts and reconnecting the electrical connector.

4. Test Fuel Injector

• Check the fuel injector for cylinder 1:
  • Remove the fuel rail if necessary to access the injector.
  • Use a noid light to check for proper signal at the injector connector.
  • Replace the injector if it does not operate correctly.

5. Reassemble and Clear Codes

• Reassemble any components removed during inspection.
• Reconnect the battery.
• Use the OBD-II scanner to clear the P0301 code from the engine control module.