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 battery to avoid electrical shock and errors during repairs.

2. Inspect and Repair Vacuum Leaks

• Tools Required: Vacuum gauge, hose clamps, basic hand tools
• Inspect all vacuum lines and connections for cracks or disconnections.
• Use a vacuum gauge to check for leaks; a reading below the normal range indicates a leak.
• Replace any damaged hoses or reattach loose connections securely.

3. Check and Clean MAF Sensor

• Tools Required: MAF sensor cleaner, Torx screwdriver
• Locate the MAF sensor on the air intake duct.
• Disconnect the electrical connector and remove the sensor using the screwdriver.
• Spray the MAF sensor with MAF cleaner, avoiding touching the sensor elements.
• Allow it to dry completely and reinstall the sensor.

4. Test Fuel Pressure

• Tools Required: Fuel pressure gauge
• Locate the fuel rail and connect the fuel pressure gauge.
• Turn the ignition to the "on" position without starting the engine and check the reading.
• If the pressure is below specifications, inspect the fuel pump and filter for issues.

5. Inspect Fuel Injectors

• Tools Required: Multimeter, injector cleaner, basic hand tools
• Disconnect the fuel injector connectors and test the resistance with a multimeter.
• If the resistance is out of spec, replace the injector.
• Use an injector cleaner to clean clogged injectors if they are operational.