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

Solution

1. Preparation

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

Tools Required:

• OBD-II scanner
• Multimeter
• Socket set
• Torque wrench
• Fuel pressure gauge
• Cleaning spray for MAF sensor

2. Inspect and Repair Air Intake System

• Sub-step 1: Visually inspect the entire air intake system (hoses, air filter box) for signs of cracks or disconnections. Replace any damaged components.
• Sub-step 2: Use a smoke machine or soapy water to identify vacuum leaks; repair or replace any defective hoses.
• Sub-step 3: Clean the MAF sensor using MAF cleaner spray. Allow it to dry before reinstallation.

3. Check Fuel System

• Sub-step 1: Use a fuel pressure gauge to check the fuel pressure against manufacturer specifications. If pressure is low, inspect the fuel pump and fuel filter.
• Sub-step 2: If necessary, replace the fuel filter and consider replacing the fuel pump if it is not delivering the correct pressure.
• Sub-step 3: Inspect fuel injectors for clogs using a cleaning kit, or replace them if they are malfunctioning.

4. Inspect Oxygen Sensors

• Sub-step 1: Using a multimeter, check the voltage output of the oxygen sensors to ensure they are functioning correctly.
• Sub-step 2: Replace any faulty oxygen sensors, ensuring proper torque specifications are followed during installation.