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

Solution

1. Preparation

• Gather tools: OBD-II scanner, fuel pressure gauge, multimeter, socket set, and vacuum gauge.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Repair Air Intake System

• Sub-steps:
  1. Visually inspect the air intake hoses and connections for signs of cracks or wear.
  2. Tighten any loose clamps or connections.
  3. Replace any damaged hoses with OEM parts.

3. Clean or Replace MAF Sensor

• Sub-steps:
  1. Locate the MAF sensor, typically found between the air filter and throttle body.
  2. Remove the sensor carefully using a socket set.
  3. Clean the MAF sensor with MAF cleaner; allow it to dry completely.
  4. Reinstall the sensor and reconnect the electrical connector securely.

4. Check and Adjust Fuel Pressure

• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail.
  2. Turn the ignition to the ON position (do not start the engine) to check the pressure.
  3. Compare the reading to the manufacturer’s specifications; it should typically be between 50-65 PSI.
  4. If pressure is low, consider replacing the fuel pump or checking the fuel filter for clogs.

5. Inspect and Test Fuel Injectors

• Sub-steps:
  1. Remove the fuel injectors from the fuel rail.
  2. Inspect the O-rings for wear; replace if necessary.
  3. Use a multimeter to test the injectors for proper resistance.
  4. Clean injectors using an ultrasonic cleaner or replace if they are not functioning correctly.