how to fix P0174 code in my Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Gather all necessary tools and parts before beginning.
• Disconnect the battery to prevent any electrical shorts.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, and replacement hoses if needed.
• Check all vacuum lines connected to the intake manifold and throttle body for cracks or disconnections.
• Replace any damaged hoses and ensure all connections are secure.

3. Clean the MAF Sensor

• Tools Required: MAF cleaner or isopropyl alcohol, soft cloth.
• Remove the MAF sensor from the air intake duct.
• Spray the MAF cleaner onto the sensor elements and let it dry completely before reinstallation.

4. Test and Replace Fuel Injectors (if necessary)

• Tools Required: Fuel injector cleaner, socket set, and torque wrench.
• Remove the fuel rail to access the injectors.
• Clean the injectors using a fuel injector cleaning kit, or replace them if they are clogged or malfunctioning.
• Reinstall the fuel rail and torque to manufacturer specifications.

5. Verify Fuel Pressure

• Tools Required: Fuel pressure gauge.
• Connect the fuel pressure gauge to the fuel rail test port.
• Turn the ignition to the "on" position without starting the engine and check the pressure; it should meet manufacturer specifications (typically between 30-60 psi).
• If the pressure is low, check the fuel filter and pump for issues.