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

Solution

1. Preparation

• Tools Required: OBD-II scanner, vacuum gauge, MAF cleaner, fuel pressure gauge, socket set, screwdrivers.
• Disconnect the negative terminal of the battery to avoid electrical shorts.

2. Inspect and Repair Air Intake System

• Sub-steps:
  • Visually inspect the air intake hose and connections for cracks or loose fittings.
  • Use a vacuum gauge to check for vacuum leaks.
  • If leaks are found, replace or repair the affected components (hoses, gaskets).

3. Clean or Replace MAF Sensor

• Sub-steps:
  • Locate the MAF sensor and disconnect the electrical connector.
  • Remove the MAF sensor from the intake duct.
  • Clean the MAF sensor using MAF cleaner. Allow it to dry completely.
  • Reinstall the MAF sensor and reconnect the electrical connector.

4. Check Fuel Pressure

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Turn the ignition key to the "ON" position without starting the engine to check for initial pressure.
  • Compare the reading with the manufacturer specifications (typically around 30-50 psi for F-150).
  • If pressure is low, inspect the fuel pump, filter, and lines for blockages or damage.

5. Inspect Fuel Injectors

• Sub-steps:
  • Remove the fuel rail to access the injectors.
  • Check for any signs of leaks or blockage in the injectors.
  • If necessary, clean the injectors or replace them if malfunctioning.