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

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting any work.

2. Inspect and Repair Air Intake System

• Tools Required: Screwdriver set, vacuum gauge
• Inspect all air intake hoses and connections for cracks or loose fittings.
• Use a vacuum gauge to check for any vacuum leaks.
• Repair or replace any damaged components.

3. Check and Clean MAF Sensor

• Tools Required: MAF cleaner, soft cloth
• Locate the MAF sensor between the air filter and throttle body.
• Disconnect the electrical connector and remove the sensor.
• Spray MAF cleaner onto the sensor element and allow it to dry before reinstalling.

4. Test and Adjust Fuel Pressure

• Tools Required: Fuel pressure gauge
• Locate the fuel rail and connect the fuel pressure gauge.
• Turn the ignition to the "ON" position (do not start) to allow the fuel pump to pressurize the system.
• Check that the fuel pressure matches manufacturer specifications (typically 55-65 psi).
• If pressure is low, inspect the fuel pump and filter for issues.

5. Inspect Fuel Injectors

• Tools Required: Multimeter or injector tester
• Locate the fuel injectors and remove their electrical connectors.
• Use a multimeter to check for resistance (should be within manufacturer specifications).
• If any injectors are faulty, replace them as necessary.

6. Reassemble and Reconnect

• Reinstall any components that were removed during inspection.
• Reconnect the negative battery terminal.
• Clear the P0174 code using the OBD-II scanner.