how to fix P0174 code in Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety while working on electrical components.

2. Inspect and Repair Vacuum Leaks

• Sub-step 1: Visually inspect all vacuum lines and intake manifold gaskets for cracks or damage.
• Sub-step 2: Replace any damaged hoses or gaskets found during the inspection.
• Tools Required: Pliers, hose clamps, gasket scraper.

3. Clean or Replace MAF Sensor

• Sub-step 1: Locate the MAF sensor on the air intake duct.
• Sub-step 2: Disconnect the electrical connector and remove the sensor from the duct.
• Sub-step 3: Use MAF cleaner to clean the sensor element; do not touch it with hands or tools.
• Sub-step 4: If the sensor is damaged, replace it with a new one.
• Tools Required: Screwdriver, MAF cleaner.

4. Check Fuel System

• Sub-step 1: Connect a fuel pressure gauge to the Schrader valve on the fuel rail.
• Sub-step 2: Turn the ignition to the "ON" position without starting the engine and check the pressure. It should be within manufacturer specifications (typically around 50-60 psi).
• Sub-step 3: If pressure is low, check the fuel pump and replace if necessary.
• Tools Required: Fuel pressure gauge, socket set.

5. Inspect and Clean Fuel Injectors

• Sub-step 1: Remove the fuel rail to access the injectors.
• Sub-step 2: Inspect each injector for clogs and electrical continuity.
• Sub-step 3: Clean the injectors using a professional cleaning solution or replace them if they are defective.
• Tools Required: Socket set, injector cleaning kit.