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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface, and the engine is cool.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, pliers
• Use a vacuum gauge to check for leaks in the intake system.
• Visually inspect all vacuum lines and connections for cracks or disconnections.
• Replace any damaged hoses or gaskets.

3. Check and Clean MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver
• Disconnect the MAF sensor electrical connector.
• Remove the MAF sensor from the intake duct.
• Spray MAF sensor cleaner on the sensing element and allow it to dry.
• Reinstall the MAF sensor and reconnect the electrical connector.

4. Test Fuel Pressure

• Tools Required: Fuel pressure gauge, safety glasses
• Locate the fuel pressure test port on the fuel rail.
• Attach the fuel pressure gauge to the test port and turn the ignition to the "On" position without starting the engine.
• Check the fuel pressure reading against manufacturer specifications (typically between 50-70 psi).
• If pressure is low, inspect the fuel pump and filter for issues.

5. Inspect Fuel Injectors

• Tools Required: Multimeter, injector cleaning kit (if needed)
• Disconnect the electrical connectors from the fuel injectors.
• Use a multimeter to check the resistance of each injector (should be within specifications).
• If an injector is faulty, replace it. If clogged, use a cleaning kit to clean the injectors.