how to fix P0174 code in Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool before beginning work.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdrivers, pliers
• Check the air intake duct and hoses for cracks or loose connections.
  • Tighten any loose clamps or replace damaged hoses as needed.
  • Inspect the throttle body for cleanliness and ensure it operates smoothly.

3. Clean or Replace Mass Air Flow (MAF) Sensor

• Tools Required: MAF sensor cleaner or isopropyl alcohol, soft cloth
• Remove the MAF sensor from the air intake.
  • Spray the sensor with MAF cleaner and let it dry completely before reinstalling.
  • Check the electrical connector for corrosion or damage.

4. Check and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Attach the fuel pressure gauge to the fuel rail.
  • Turn the ignition key to the "ON" position without starting the engine and check the reading.
  • If pressure is below specifications, inspect the fuel pump and replace if necessary.

5. Inspect Fuel Injectors

• Tools Required: Fuel injector cleaning kit
• Remove the fuel rail to access the injectors.
  • Clean the injectors with a cleaning kit or replace them if they are faulty.
  • Reinstall the fuel rail and ensure all connections are secure.

6. Reconnect Battery and Clear Codes

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0174 code.
• Start the engine and check for any reoccurrence of codes.