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

Solution

1. Preparation

• Gather tools and parts needed for repairs.
• Disconnect the battery to prevent electrical shorts.

Tools Required:

• OBD-II scanner
• Vacuum gauge
• Fuel pressure gauge
• Socket set
• Torque wrench
• Screwdrivers
• Safety glasses
• Mechanic's gloves

2. Inspect and Repair Air Intake System

1. Remove the engine cover (if applicable) using the socket set.
2. Check all vacuum hoses for cracks or disconnections; replace any faulty hoses.
3. Inspect the intake manifold gasket for leaks; replace if necessary.

3. Clean the Mass Air Flow Sensor

1. Locate the MAF sensor on the air intake duct.
2. Disconnect the electrical connector and remove the sensor.
3. Use MAF sensor cleaner to clean the sensor element; allow it to dry completely before reinstalling.
4. Reattach the MAF sensor and reconnect the electrical connector.

4. Check Fuel System

1. Connect the fuel pressure gauge to the fuel rail test port.
2. Turn the ignition key to the "On" position without starting the engine to check fuel pressure.
3. Compare the reading to the manufacturer specifications; if low, inspect the fuel pump and filter for issues.

5. Inspect Fuel Injectors

1. Remove the fuel rail (if necessary) to access the fuel injectors.
2. Check each injector for clogs using a multimeter to test resistance; replace any faulty injectors.
3. Reinstall the fuel rail and ensure all connections are secure.

6. Reconnect Battery and Clear Codes

1. Reconnect the battery terminals securely.
2. Use the OBD-II scanner to clear the P0174 code from the ECM.
3. Start the engine and allow it to reach operating temperature.